Chem Module 3

Question 1

Pauli Exclusion Principle

Answer 1

2 electron per orbital, no identical quantum numbers

Question 2

Aufbau principle

Answer 2

Electrons fill lower energy first before filling higher energy

Question 3

Hund’s rule

Answer 3

single occupying of electrons in an orbital before pairing up

Question 4

2 atoms who are exceptions to electron configuration

Answer 4

Cr and Cu (move one electron from s orbital to complete d orbital)

Question 5

Paramagnetisim

Answer 5

1 or more unpaired electron

Question 6

Diamagnetism

Answer 6

all electrons are paired

Question 7

electron affinity

Answer 7

Energy accompanies the addition of an electron
- generally, acquiring an electron releases energy
- right side of period: large energy is released when electrons are added
- left side: small energy is released when an electron is added