Q: Describe the development of the modern periodic table. Includecontributions made by Lavoisier,…
A: Modern periodic table is made by Dmitri Mendeleev and Lothar Meyer. This modern period law states…
Q: Describe the basic organizational feature of the periodic table of the element.
A: The Dimitri Mendeleev gave the modern law of periodic table, which states that the properties of the…
Q: What is the main idea in the periodic law?
A: The main idea in the periodic law has to be defined.
Q: Show the locations of (a) alkali metals, (b) alkalineearth metals, (c) the halogens, and (d) the…
A: Since you have posted questions with multiple subparts, we will solve the first three sub parts for…
Q: Explain why elements in the same group have similar properties.
A: The periodic table gives the arrangement of atoms in the order of increasing atomic numbers. There…
Q: What are the main features of Mendeleev's periodic table?
A: Mendeleev states that the “the properties of the elements are the periodic function to their atomic…
Q: Which of the following describes the element Ba? Choose all that apply:(a) is very reactive as a…
A: The element given is Barium i.e Ba.
Q: Provide the following information: a. the atomic number and symbol of the lightest alkali metalb.…
A: a. the atomic number and symbol of the lightest alkali metal Symbol = Li Atomic number = 3 b. the…
Q: What is the one element that is not listed on the periodic table? and why?
A: Unbinilium is hypothetical element with atomic no. 120 is not present in the table.
Q: Which of the following is False?a. An element is defined by its atomic number.b. Ninety-two elements…
A:
Q: give examples of transition elements.
A: The transition elements contain either d subshells which are incomplete or that readily lose…
Q: Atoms of which element, indicated by letter on the periodic table, is expected to have the smallest…
A: Atomic radius in periodic table: In period moving left to right atomic radius decreases,. And In…
Q: To which blocks do the elements in the fi fth period belong?
A: A periodic table is divided into seven periods and nine groups. The element present in each group or…
Q: Which of the following elements is an halogen?
A: The elements which belong to the 17th group of the modern periodic table are called halogens. The…
Q: 7.36 Which is the largest atom in the third period of the periodic table?
A: In periodic table, there are total 7 periods (along horizontally), 18 groups (along vertically), and…
Q: Write the name of element and classify it as a metal, nonmetal, or metalloid. Ba
A:
Q: (a) Are the elements calcium, barium, and radium in the same group or same period in the periodic…
A: A horizontal row in the periodic table is known as periods and a vertical column in the periodic…
Q: Which of the following categories includes the majority of the elements metalloids, nonmetals,…
A:
Q: 7.7 Draw a rough sketch of a periodic table (no details are required). Indicate regions where…
A: In the periodic table, the metals lie on the left side, non-metals lie extremely on the right side,…
Q: The element (X) is located in the third period and the group (5A) and the element (Y) is located in…
A: The atomic number of the element located between them is 33 & the name of the element is…
Q: Elements in the same group of the periodic tablehave the sameA. number of valence electrons.B.…
A: Valence electrons are the electrons present in the outermost shell of the atom.
Q: Define the concept of Comparing Elements Down a Column of the Periodic Table ?
A: The periodic table is comprised of elements arranged in groups and periods. The vertical columns are…
Q: What is the term for the elements that belong to Groups IIIB-IIB (Groups 3-12)?
A: In the modern periodic table we have eighteen groups. These groups are classified to four blocks;…
Q: Little is known about the properties of astatine, At, becauseof its rarity and high radioactivity.…
A: Due to Astatine high radioactivity, very less information we are having: a) Astatine is solid…
Q: Which of the following would have similar properties to those of neon? Answer choices in the…
A: The atom which is having same number of valence electron as that in Ne or is present in the same…
Q: What is the name of the symbol H?
A: The given symbol H denotes the element Hydrogen.
Q: family of elements in the periodic table and how are they differentiated/ distinct from each other?
A: The terms element family and element group are used to describe sets of elements sharing common…
Q: Which of the following refer to elements in D-block? O Inner transition metals O Metalloids O…
A: A transition metal can be defined as any element in the periodic table, which includes groups 3 to…
Q: Elements that lie on the left side of the periodic table are generally non-metals?
A:
Q: What is the most recent addition to the periodic table?
A: In recent years, four elements are discovered, and all the discovered elements are radioactive in…
Q: Recognize the important subdivisionsof the periodic table: periods, groups(families), metals, and…
A: Recognize the important subdivisions of the periodic table: periods, groups (families), metals, and…
Q: what group in the periodic table would an element with atomic number 112 belong?
A: • We need to determine the group in the periodic table would an element with atomic number 112…
Q: where is metalloids located in the periodic table
A: The periodic table is the table in which each element is arranged in increasing order of their…
Q: an atom has mass no of 64, calculate radius of nucleus of this atom?
A: The radius of a typical nucleus in terms of number of nucleons is given by
Q: smallest to largest in atomic size
A: Atomic size increases as we move down a group because of the outer electron entering into the next…
Q: What are the elements in the A columns of the periodic table called a.Main group elements b.…
A:
Q: Beryllium has an atomic number of 4. Which of the following statements is true of a neutral…
A:
Q: Which of the following statements concerning the periodic table is incorrect? a. All the elements…
A:
Q: Elements of a group in the periodic table
A: The periodic table is the arrangement of chemical elements according to their atomic number. These…
Q: Calculate the radius of the copper atom, given that copper has an fcc crystalstructure, a density of…
A: Given data Atomic mass = 63.55 g/mole density = 8.89 g/cm3 Copper has FCC Unit cell Standard…
Q: What subshell is being filled for the metalloid elements?
A: Metalloids are the elements that behave metal like and have loosely bound electron in the outermost…
Q: Even though an atom of germanium has more than twice the nuclear charge of an atom of silicon , the…
A: Hii there, As there are multiple question posted. we are answering first question. If you need…
Q: ving: Why are the elements' atomic masses not in strict increasing order in the periodic table even…
A: As per the policy, we are only allowed to answer only 1st question. To get the answer of other…
Q: explain the significance of the rows and columns of periodic table.
A:
Q: In what general direction(s) of the Periodic Table does atomic radius increase? Choose as ma answers…
A: Atomic radius of element is the measure of size of element.
Q: Which phrase beat describes the structure of an atom A: Nucleus surrounded by electrons in set…
A: Atom is made up of protons, neutrons and electrons and electrons are revolving around the nucleus.
Q: (c) Explain why the d block elements zinc and scandium are not transition elements. (
A: Sc and Zn both are d-block elements .
Q: Predict the atomic number of the (as yet undiscovered) element in the seventh period that is a…
A: The atomic number of the element ( as yet undiscovered) in the seventh period of the halogen has to…
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- v. Answer true or false. (a) Mendeleev 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. (e) Nonmetals are found at the top of the Periodic Table, metalloids in the middle, and metals at the bottom. (d) Among the 116 known elements, there are approximately equal numbers of metals and nonmetals. (e) A horizontal row in the Periodic Table is called a group. () The Group 1A elements are called the "alkali metals." (g) The alkali metals react with water to give hydrogen gas and a metal hydroxide, MOH, where “M" is the metal. (h) The halogens are Group 7A elements. (1) The boiling points of noble gases (Group 8A elements) increase in going from top to bottom of the column.(d) the ion with 74 electrons, 116 neutrons, and a +3 chargeAtoms of each of the following elements are essential for life. Give the group name for the following elements:(a) chlorine(b) calcium(c) sodium(d) sulfur
- (a) Are the elements calcium, barium, and radium in the same group or same period in the periodic table? (b) Are the elements rhodium, cadmium, and tin in the same group or period?Examine the ratio of atomic mass to atomic number for the elements with even atomic number through calcium. This ratio is approximately the ratio of the average mass number to the atomic number. (a) Which two elements stand out as different in this set of ten? (b) What would be the "expected" atomic mass of argon, based on the correlation considered here? (c) Show how the anomaly in the ordering of natural atomic masses of argon and potassium can be accounted for by the formation of “extra" 40 Ar via decay of 4°K atoms.An element has nine protons and 10 neutrons in the neutral atom. (a) How many electrons are present in the neutral atom? (b) What is the atomic number of this element? (c) Identify the element.
- Give the group name for each of the following elements:(a) krypton(b) selenium(c) barium(d) lithium1. Using the various group classifications from the periodic table, assign all appropriate labels to each of the following elements. Each element will have multiple (2 or more) answers. (a) Silver (b) Tennessine (c) Samarium (d) Antimony 2. Calculate the numbers of each type of nucleon and the number of electrons in each of the following species. (a) neodymium-149 (b) tantalum-179 (c) sellenium-79 dianion (d) krypton-85 trication 3. Write the ground-state electron configuration for the following atoms or ions. Use core notation in your electron configurations at your own discretion. (a) As (b) Au (c) Ce (d) Zn2− (e) Po4+ 4. Write an appropriate set of four quantum numbers (n, l, ms & ms) that could be representative of a valence electron in each of the following atoms or ions. (a) Bi (b) Sr (c) Mo (d) Ru2+ (e) Eu 5. In theory, there are an infinite number of energy levels and atomic orbital types that we can define using the solutions to the Schrödinger…Which elements are alkaline earth metals?(a) rubidium(b) tungsten(c) magnesium(d) cesium(e) beryllium
- What are (i) mass, (ii) charge and (iii) location in the atom of each of the following sub-atomic particles: (a) Electron (b) Neutron (c) Proton11. Write the symbol for each of the following ions: (a) the ion with a 1+ charge, atomic number 55, and mass number 133 (b) the ion with 54 electrons, 53 protons, and 74 neutrons (c) the ion with atomic number 15, mass number 31, and a 3- charge (d) the ion with 24 electrons, 30 neutrons, and a 3+ chargeHelium is the lightest noble gas and the second most abundant element (after hydrogen) in the universe. (a) The radius of a helium atom is 3.1x10-11 m; the radius of its nucleus is 2.5x10-15 m. What fraction of the spherical atomic volume is occupied by the nucleus (V of a sphere 5 4/ 3πr3)? (b) The mass of a helium-4 atom is 6.64648x10-24 g, and each of its two electrons has a mass of 9.10939x10-28 g. What fraction of this atom’s mass is contributed by its nucleus?