1 Chemistry: Methods And Measurements 2 The Structure Of The Atom And The Periodic Table 3 Structure And Properties Of Ionic And Covalent Compounds 4 Calculations And The Chemical Equation 5 States Of Matter: Gases, Liquids, And Solids 6 Solutions 7 Energy, Rate, And Equilibrium 8 Acids And Bases And Oxidation-reduction 9 The Nucleus, Radioactivity, And Nuclear Medicine 10 An Introduction To Organic Chemistry: The Saturated Hydrocarbons 11 The Unsaturated Hydrocarbons: Alkenes, Alkynes, And Aromatics 12 Alcohols, Phenols, Thiols, And Ethers 13 Aldehydes And Ketones 14 Carboxylic Acids And Carboxylic Acid Derivatives 15 Amines And Amides 16 Carbohydrates 17 Lipids And Their Functions In Biochemical Systems 18 Protein Structure And Function 19 Enzymes 20 Introduction To Moelcular Genetics 21 Carbohydrate Metabolism 22 Aerobic Respiration And Energy Production 23 Fatty Acid Metabolism expand_more
2.1 Composition Of The Atom 2.2 Development Of Atomic Theory 2.3 Light, Atomic Structure, And The Bohr Atom 2.4 The Periodic Law And The Periodic Table 2.5 Electron Arrangement And The Periodic Table 2.6 Valence Electrons And The Octet Rule 2.7 Trends In The Periodic Table Chapter Questions expand_more
Problem 2.19QP Problem 2.20QP: Why is the number of electrons not part of the mass number of an atom?
Problem 2.21QP: Fill in the blanks:
Isotopes of an element differ in mass because the atoms have a different number... Problem 2.22QP: Identify which of the following isotopic symbols is incorrect.
Problem 2.23QP: Identify the major difference and the major similarity among isotopes of an element.
Problem 2.24QP: Label each of the following statements as true or false:
An atom with an atomic number of 7 and a... Problem 2.25QP: Label each of the following statements as true or false.
Isotopes are atoms of the same element with... Problem 2.26QP: The nuclei of three different atoms are depicted in the diagrams below. Which ones are isotopes, if... Problem 2.27QP: Calculate the number of protons, neutrons, and electrons in:
Problem 2.28QP: Calculate the number of protons, neutrons, and electrons in:
Problem 2.29QP: An atom has nine protons, ten neutrons, and nine electrons. Write the symbol of the atom.
Problem 2.30QP: An atom has nineteen protons, twenty neutrons, and nineteen electrons. Write the symbol of the... Problem 2.31QP: How many protons are in the nucleus of the isotope Rn-220?
How many neutrons are in the nucleus of... Problem 2.32QP Problem 2.33QP: Selenium-80 is a naturally occurring isotope used in over-the-counter supplements.
How many protons... Problem 2.34QP Problem 2.35QP: Write symbols for each isotope:
Each atom contains one proton and zero neutrons.
Each atom contains... Problem 2.36QP Problem 2.37QP: The element copper has two naturally occurring isotopes. One of these has a mass of 62.93 amu and a... Problem 2.38QP: The element lithium has two naturally occurring isotopes. One of these has a mass of 6.0151 amu and... Problem 2.39QP Problem 2.40QP Problem 2.41QP: Describe the experiment that provided the basis for our understanding of the nucleus.
Problem 2.42QP Problem 2.43QP Problem 2.44QP Problem 2.45QP Problem 2.46QP Problem 2.47QP Problem 2.48QP Problem 2.49QP Problem 2.50QP Problem 2.51QP Problem 2.52QP Problem 2.53QP: Describe electromagnetic radiation according to its wave nature.
Problem 2.54QP Problem 2.55QP: Is the following statement true or false?
Light of higher energy travels at a faster speed than... Problem 2.56QP Problem 2.57QP Problem 2.58QP Problem 2.59QP: Describe the process that occurs when electrical energy is applied to a sample of hydrogen gas.
Problem 2.60QP: When electrical energy is applied to an element in its gaseous state, light is produced. How does... Problem 2.61QP Problem 2.62QP Problem 2.63QP Problem 2.64QP Problem 2.65QP: What was the major contribution of Bohr’s atomic model?
Problem 2.66QP: What was the major deficiency of Bohr’s atomic model?
Problem 2.67QP: Provide the atomic number, atomic mass, and name of the element represented by each of the following... Problem 2.68QP: Provide the atomic number, atomic mass, and name of the element represented by each of the following... Problem 2.69QP Problem 2.70QP Problem 2.71QP: Which group of the periodic table is known as the halogens? List their names.
Problem 2.72QP Problem 2.73QP: For each of the elements Na, Ni, Al, P, Cl, and Ar, provide the following information:
Which are... Problem 2.74QP Problem 2.75QP Problem 2.76QP Problem 2.77QP: Distinguish between a principal energy level and a sublevel.
Problem 2.78QP: Distinguish between a sublevel and an orbital.
Problem 2.79QP: Sketch a diagram and describe our current model of an s orbital.
Problem 2.80QP: How is a 2s orbital different from a 1s orbital?
Problem 2.81QP Problem 2.82QP: For any given principal energy level, what is the maximum number of electrons that can exist in the... Problem 2.83QP: State the Pauli exclusion principle. Explain how it is used to determine the number of electrons... Problem 2.84QP: State Hund’s rule. Determine whether the following orbital diagrams violate Hund’s rule.
Problem 2.85QP: Using the periodic table, write the electron configuration of each of the following atoms:
Al
Na
Sc
Problem 2.86QP: Using the periodic table, write the electron configuration of each of the following atoms:
Ca
Fe
Cl
Problem 2.87QP: Using the periodic table, write the electron configuration and orbital diagram of each of the... Problem 2.88QP: Using the periodic table, write the electron configuration and orbital diagram of each of the... Problem 2.89QP: Which of the following electron configurations are not possible?... Problem 2.90QP Problem 2.91QP: Determine whether the following orbital diagrams are correct. I there is an error, fix the... Problem 2.92QP: Identify the element for each of the orbital diagrams (once corrected) in Question 2.91.
Determine... Problem 2.93QP: Use the periodic table and determine the shorthand electron configuration of each of the following... Problem 2.94QP Problem 2.95QP Problem 2.96QP Problem 2.97QP: State the octet rule.
Problem 2.98QP Problem 2.99QP Problem 2.100QP Problem 2.101QP: How many total electrons and valence electrons are found in an atom of each of the following... Problem 2.102QP Problem 2.103QP Problem 2.104QP Problem 2.105QP Problem 2.106QP: Predict the number of valence electrons in an atom of:
carbon
phosphorus
sulfur
chlorine
Problem 2.107QP Problem 2.108QP Problem 2.109QP Problem 2.110QP Problem 2.111QP Problem 2.112QP Problem 2.113QP Problem 2.114QP Problem 2.115QP Problem 2.116QP Problem 2.117QP Problem 2.118QP Problem 2.119QP Problem 2.120QP Problem 2.121QP Problem 2.122QP Problem 2.123QP Problem 2.124QP Problem 2.125QP: Explain why a positive ion is always smaller than its parent atom.
Explain why a fluoride ion is... Problem 2.126QP Problem 2.127QP Problem 2.128QP Problem 1MCP: For the isotope chlorine-37:
How many protons are in chlorine-37?
How many neutrons are in... Problem 2MCP: A natural sample of chromium, taken from the ground, will contain four isotopes: Cr-50, Cr-52,... Problem 3MCP: For the element sulfur, provide the following information:
Atomic number
Elemental symbol
Average... Problem 5MCP Problem 7MCP format_list_bulleted