Question 1: During the bond formation, what happens to the total energy of the electrons?

During the bond formation, what happens to the total energy of the electrons? (ET = EP + EK)

A) Potential energy decreases and kinetic energy increases

B) Potential energy increases and kinetic energy decreases

C) Potential energy decreases and kinetic energy decreases

D) Potential energy increases and kinetic energy increases

Question 2:

Shorter bonds are generally considered “stronger”. What does that mean energetically?

A) Shorter bonds would release more energy when broken

B) Shorter bonds would require more energy to break

C) Shorter bonds would have more energy stored in them

D) All of the above

Question 3:What is valency?

A) The bonding capacity of atoms

B) The number of electrons in an atom’s valence (outer) shell

C) It is a property that is the same for all elements in a horizontal row (period) of the periodic table

D) All of the above

Question 4 :

What is true about ionization energy?

A) Ionization energy is the energy required to remove an electron from an atom

B) Ionization energy is greater for electrons closer to the nucleus

C) Ionization energy is smaller for atoms with a larger radius

D) All of the above

Question 5: 

Electron configuration shows how the electrons are arranged in an atom (starting with the electrons closest to the nucleus). What is the full electron configuration of a neutral sodium atom?

A) 1s2 2s2 2p6

B) 1s2 2s2 2p6 3s2 3s4

C) 1s2 2s2 2p6 3s1

D) 1s2 2s2 2p7