Final Exam Prep

Question 1

Isoelectronic ions are the ion that that is made from the other what?

Answer 1

Atoms. For example Kr is isolectronic with Br - Se2- As3-, Rb+ Sr2+ etc.

Question 2

Cations increase or decrease in size compared to the atoms they come from.

Answer 2

Decrease

Question 3

Anions increase or decrease in size compared to the atoms they come from.

Answer 3

Increase.

Question 4

True or False. For isoelectronic ions: radius decreases with increasing atomic
number (the number of protons is increasing but the number ofelectrons stays the same)

Answer 4

True.

Question 5

What is ionization energy?

Answer 5

Energy required to remove an electron from an atom in the gasphase to create a positive ion

Question 6

True or false. Ionization energy increases as size decreasesè as you move up and across the periodic table.

Answer 6

True.

Question 7

True or false. EA decreases down a group:Lower electron affinity
Larger atomic sizeLower ioniza?on energy

Answer 7

True

Question 8

True or false. When atomic radius increases, I1 decreases and electron affinity becomes less positive.

Answer 8

True.