Symbol and atomic number of heaviest nonradioactive noble gas should be written. Concept introduction: The atomic number is the total number of protons present in the nucleus. Radioactive elements are those elements that break down into different elements by release of energy.All elements in the periodic table after atomic number 83 are radioactive. Noble gases are present in group 18 of the modern periodic table.Noble gases are those elements that are almost chemically inert means they don’t participate in the chemical reaction except xenon.

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Answer 1

Question

Chapter 2, Problem 2.44P

a)

Interpretation Introduction

Interpretation:Symbol and atomic number of heaviest nonradioactive noble gas should be written.

Concept introduction:The atomic number is the total number of protons present in the nucleus.

Radioactive elements are those elements that break down into different elements by release of energy.All elements in the periodic table after atomic number 83 are radioactive.

Noble gases are present in group 18 of the modern periodic table.Noble gases are those elements that are almost chemically inert means they don’t participate in the chemical reaction except xenon.

b)

Interpretation Introduction

Interpretation:Symbol and group number of the period 5 transition element whose atoms have the fewest protons should be determined.

Concept introduction:In a periodic table, elements that are present in columns are called groups. There is total of 18 groups in the modern periodic table and each group has a separate group number.

In the modern periodic table, group number 3 to group number 12 are called transition elements or d-block elements.These elements show different valency and they form coordination compounds.Many transition elements are colored.

c)

Interpretation Introduction

Interpretation:Symbol and atomic number of first metallic chalcogen should be determined.

Concept introduction:In a periodic table, elements that are present in columns are called groups. There is total of 18 groups in the modern periodic table and each group has a separate group number.

Group 16 elements in the modern periodic table are called chalcogens.This group is also called oxygen family.

d)

Interpretation Introduction

Interpretation:Symbol and the number of protons of the period 4 alkali metal atom should be determined.

Concept introduction:In a periodic table, elements that are present in columns are called groups. There is total of 18 groups in the modern periodic table and each group has a separate group number.

Group 1 elements in modern periodic table are known as alkali metals.Alkali metals lose their one valence electron to form ionic compounds. Due to this property, they are very reactive.

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Students have asked these similar questions

(a) How many elements are found in period 4 in the periodic table? (b) How many elements are found in group 4A (or 14)?

(a) In the certain hydrated salt MSO34H2O, the mass percentage of H2O is 44.71%.Identify the element M in the salt?(b) A certain element has two naturally occurring isotopes.The mass of one of the isotopes is 106.905 amu and its natural abundance is 51.60%.The mass of the second isotope is 108.883 amu.Calculate the average atomic massWrite the chemical symbols of the isotopes(c) An organic compound consists of carbon, hydrogen and sulfur only.The percentage of carbon by mass in this compound was found to be 30.27%.The complete combustion of 1.367 g this compound produces 1.765 g of sulfur dioxide(SO2) (i) Determine the empirical formula for this compound.(ii) If a sample of this compound having the mass 3.781 × 103 mg contains 9.528 × 10–3 molesof the compound, determine the molecular formula

Answer true or false. (a) Mendeleyev discovered that when elements are arranged in order of increasing atomic weight, certain sets of properties recur periodically.(b) Main-group elements are those in the columns 3A to 8A of the Periodic Table.(c) Nonmet.als are found at the top of the Periodic Table, metalloids in the middle, and metals at the bottom.(d) Among the US known elements,there are approximately equal numbers of metals and non metals.(e) A horizontal row in the Periodic Table is called a group.(f) The Group LA elements are called the "alkali metals"(g) The alkali metals react with water to give hydrogen gas and a metalhydroxide, MOH, where "M' is the metal."(h) The halogens are Group 7A elements.(i) The boiling points of noble gases (Group SA elements) increase goingfrom top to bottom of the column.

Answer 2

Question

Chapter 2, Problem 2.44P

a)

Interpretation Introduction

Interpretation:Symbol and atomic number of heaviest nonradioactive noble gas should be written.

Concept introduction:The atomic number is the total number of protons present in the nucleus.

Radioactive elements are those elements that break down into different elements by release of energy.All elements in the periodic table after atomic number 83 are radioactive.

Noble gases are present in group 18 of the modern periodic table.Noble gases are those elements that are almost chemically inert means they don’t participate in the chemical reaction except xenon.

b)

Interpretation Introduction

Interpretation:Symbol and group number of the period 5 transition element whose atoms have the fewest protons should be determined.

Concept introduction:In a periodic table, elements that are present in columns are called groups. There is total of 18 groups in the modern periodic table and each group has a separate group number.

In the modern periodic table, group number 3 to group number 12 are called transition elements or d-block elements.These elements show different valency and they form coordination compounds.Many transition elements are colored.

c)

Interpretation Introduction

Interpretation:Symbol and atomic number of first metallic chalcogen should be determined.

Concept introduction:In a periodic table, elements that are present in columns are called groups. There is total of 18 groups in the modern periodic table and each group has a separate group number.

Group 16 elements in the modern periodic table are called chalcogens.This group is also called oxygen family.

d)

Interpretation Introduction

Interpretation:Symbol and the number of protons of the period 4 alkali metal atom should be determined.

Concept introduction:In a periodic table, elements that are present in columns are called groups. There is total of 18 groups in the modern periodic table and each group has a separate group number.

Group 1 elements in modern periodic table are known as alkali metals.Alkali metals lose their one valence electron to form ionic compounds. Due to this property, they are very reactive.

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Answer 3

Question

Chapter 2, Problem 2.44P

a)

Interpretation Introduction

Interpretation:Symbol and atomic number of heaviest nonradioactive noble gas should be written.

Concept introduction:The atomic number is the total number of protons present in the nucleus.

Radioactive elements are those elements that break down into different elements by release of energy.All elements in the periodic table after atomic number 83 are radioactive.

Noble gases are present in group 18 of the modern periodic table.Noble gases are those elements that are almost chemically inert means they don’t participate in the chemical reaction except xenon.

b)

Interpretation Introduction

Interpretation:Symbol and group number of the period 5 transition element whose atoms have the fewest protons should be determined.

Concept introduction:In a periodic table, elements that are present in columns are called groups. There is total of 18 groups in the modern periodic table and each group has a separate group number.

In the modern periodic table, group number 3 to group number 12 are called transition elements or d-block elements.These elements show different valency and they form coordination compounds.Many transition elements are colored.

c)

Interpretation Introduction

Interpretation:Symbol and atomic number of first metallic chalcogen should be determined.

Concept introduction:In a periodic table, elements that are present in columns are called groups. There is total of 18 groups in the modern periodic table and each group has a separate group number.

Group 16 elements in the modern periodic table are called chalcogens.This group is also called oxygen family.

d)

Interpretation Introduction

Interpretation:Symbol and the number of protons of the period 4 alkali metal atom should be determined.

Concept introduction:In a periodic table, elements that are present in columns are called groups. There is total of 18 groups in the modern periodic table and each group has a separate group number.

Group 1 elements in modern periodic table are known as alkali metals.Alkali metals lose their one valence electron to form ionic compounds. Due to this property, they are very reactive.

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Answer 4

Question

Chapter 2, Problem 2.44P

a)

Interpretation Introduction

Interpretation:Symbol and atomic number of heaviest nonradioactive noble gas should be written.

Concept introduction:The atomic number is the total number of protons present in the nucleus.

Radioactive elements are those elements that break down into different elements by release of energy.All elements in the periodic table after atomic number 83 are radioactive.

Noble gases are present in group 18 of the modern periodic table.Noble gases are those elements that are almost chemically inert means they don’t participate in the chemical reaction except xenon.

b)

Interpretation Introduction

Interpretation:Symbol and group number of the period 5 transition element whose atoms have the fewest protons should be determined.

Concept introduction:In a periodic table, elements that are present in columns are called groups. There is total of 18 groups in the modern periodic table and each group has a separate group number.

In the modern periodic table, group number 3 to group number 12 are called transition elements or d-block elements.These elements show different valency and they form coordination compounds.Many transition elements are colored.

c)

Interpretation Introduction

Interpretation:Symbol and atomic number of first metallic chalcogen should be determined.

Concept introduction:In a periodic table, elements that are present in columns are called groups. There is total of 18 groups in the modern periodic table and each group has a separate group number.

Group 16 elements in the modern periodic table are called chalcogens.This group is also called oxygen family.

d)

Interpretation Introduction

Interpretation:Symbol and the number of protons of the period 4 alkali metal atom should be determined.

Concept introduction:In a periodic table, elements that are present in columns are called groups. There is total of 18 groups in the modern periodic table and each group has a separate group number.

Group 1 elements in modern periodic table are known as alkali metals.Alkali metals lose their one valence electron to form ionic compounds. Due to this property, they are very reactive.

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Answer 5

Chapter 2, Problem 2.44P

a)

Interpretation Introduction

Interpretation:Symbol and atomic number of heaviest nonradioactive noble gas should be written.

Concept introduction:The atomic number is the total number of protons present in the nucleus.

Radioactive elements are those elements that break down into different elements by release of energy.All elements in the periodic table after atomic number 83 are radioactive.

Noble gases are present in group 18 of the modern periodic table.Noble gases are those elements that are almost chemically inert means they don’t participate in the chemical reaction except xenon.

b)

Interpretation Introduction

Interpretation:Symbol and group number of the period 5 transition element whose atoms have the fewest protons should be determined.

Concept introduction:In a periodic table, elements that are present in columns are called groups. There is total of 18 groups in the modern periodic table and each group has a separate group number.

In the modern periodic table, group number 3 to group number 12 are called transition elements or d-block elements.These elements show different valency and they form coordination compounds.Many transition elements are colored.

c)

Interpretation Introduction

Interpretation:Symbol and atomic number of first metallic chalcogen should be determined.

Concept introduction:In a periodic table, elements that are present in columns are called groups. There is total of 18 groups in the modern periodic table and each group has a separate group number.

Group 16 elements in the modern periodic table are called chalcogens.This group is also called oxygen family.

d)

Interpretation Introduction

Interpretation:Symbol and the number of protons of the period 4 alkali metal atom should be determined.

Concept introduction:In a periodic table, elements that are present in columns are called groups. There is total of 18 groups in the modern periodic table and each group has a separate group number.

Group 1 elements in modern periodic table are known as alkali metals.Alkali metals lose their one valence electron to form ionic compounds. Due to this property, they are very reactive.

Answer 6

Chapter 2, Problem 2.44P

a)

Interpretation Introduction

Interpretation:Symbol and atomic number of heaviest nonradioactive noble gas should be written.

Concept introduction:The atomic number is the total number of protons present in the nucleus.

Radioactive elements are those elements that break down into different elements by release of energy.All elements in the periodic table after atomic number 83 are radioactive.

Noble gases are present in group 18 of the modern periodic table.Noble gases are those elements that are almost chemically inert means they don’t participate in the chemical reaction except xenon.

Answer 7

Chapter 2, Problem 2.44P

a)

Interpretation Introduction

Interpretation:Symbol and atomic number of heaviest nonradioactive noble gas should be written.

Concept introduction:The atomic number is the total number of protons present in the nucleus.

Radioactive elements are those elements that break down into different elements by release of energy.All elements in the periodic table after atomic number 83 are radioactive.

Noble gases are present in group 18 of the modern periodic table.Noble gases are those elements that are almost chemically inert means they don’t participate in the chemical reaction except xenon.

Answer 8

b)

Interpretation Introduction

Interpretation:Symbol and group number of the period 5 transition element whose atoms have the fewest protons should be determined.

Concept introduction:In a periodic table, elements that are present in columns are called groups. There is total of 18 groups in the modern periodic table and each group has a separate group number.

In the modern periodic table, group number 3 to group number 12 are called transition elements or d-block elements.These elements show different valency and they form coordination compounds.Many transition elements are colored.

Answer 9

b)

Interpretation Introduction

Interpretation:Symbol and group number of the period 5 transition element whose atoms have the fewest protons should be determined.

Concept introduction:In a periodic table, elements that are present in columns are called groups. There is total of 18 groups in the modern periodic table and each group has a separate group number.

In the modern periodic table, group number 3 to group number 12 are called transition elements or d-block elements.These elements show different valency and they form coordination compounds.Many transition elements are colored.

Answer 10

c)

Interpretation Introduction

Interpretation:Symbol and atomic number of first metallic chalcogen should be determined.

Concept introduction:In a periodic table, elements that are present in columns are called groups. There is total of 18 groups in the modern periodic table and each group has a separate group number.

Group 16 elements in the modern periodic table are called chalcogens.This group is also called oxygen family.

Answer 11

c)

Interpretation Introduction

Interpretation:Symbol and atomic number of first metallic chalcogen should be determined.

Concept introduction:In a periodic table, elements that are present in columns are called groups. There is total of 18 groups in the modern periodic table and each group has a separate group number.

Group 16 elements in the modern periodic table are called chalcogens.This group is also called oxygen family.

Answer 12

d)

Interpretation Introduction

Interpretation:Symbol and the number of protons of the period 4 alkali metal atom should be determined.

Concept introduction:In a periodic table, elements that are present in columns are called groups. There is total of 18 groups in the modern periodic table and each group has a separate group number.

Group 1 elements in modern periodic table are known as alkali metals.Alkali metals lose their one valence electron to form ionic compounds. Due to this property, they are very reactive.

Answer 13

d)

Interpretation Introduction

Interpretation:Symbol and the number of protons of the period 4 alkali metal atom should be determined.

Concept introduction:In a periodic table, elements that are present in columns are called groups. There is total of 18 groups in the modern periodic table and each group has a separate group number.

Group 1 elements in modern periodic table are known as alkali metals.Alkali metals lose their one valence electron to form ionic compounds. Due to this property, they are very reactive.

Answer 14

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Answer 15

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Answer 16

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Answer 17

Ch. 2 - What is the key difference between an element and...Ch. 2 - List two differences between a compound and a...Ch. 2 - Which of the following are pure substances?...Ch. 2 - Classify each substance in Problem 2.3 as an...Ch. 2 - Each scene below represents a mixture. Describe...Ch. 2 - To which classes of matterâ€”element, compound,...Ch. 2 - Identify the mass law that each of the following...Ch. 2 - Prob. 2.8P Ch. 2 - (a) Does the percent by mass of each element in a...Ch. 2 - Prob. 2.10P

Solution Summary: The author explains how the atomic number of heaviest nonradioactive noble gas should be written.

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Chapter 2 Solutions