Electron Configuration Quiz 1

Question 1

What is a shell?

Answer 1

A region where an electron can be found around the nucleus of an atom

Question 2

What is a subshell?

Answer 2

It is contained within a shell; each shell has at least one subshell
Shell 1 = ‘s’
Shell 2 = ‘s’, ‘p’
Shell 3 = ‘s’, ‘p’, ‘d’
Shell 4 = ‘s’,’p’,’d’,’f’

Question 3

What is an orbital?

Answer 3

It is held within each subshell and contains up to 2 electrons per orbital

There are 4 basic types: s, p, d, f

They each have a specific shape and orientation in space

Question 4

Shape of ‘s’ orbital

Answer 4

Spherical

Question 5

Shape of ‘p’ orbital

Answer 5

Has 2 lobes w/ a node between them

Question 6

of orbitals in s, p, d, and f subshells

Answer 6

s = 1
p = 3
d = 5
f = 7

(like old MS schedule)

Question 7

Maximum # of electrons in s, p, d, and f orbital

Answer 7

s = 2
p = 6
d = 10
f = 14

(Counts up by 4)

Question 8

Aufbau Principle

Answer 8

Electrons are added one at a time to the lowest energy orbitals available until electrons of all atoms have been accounted for

Question 9

Pauli Exclusion Principle

Answer 9

• An orbital can hold a maximum of 2 electrons
• To occupy the same orbital, 2 electrons must spin in opposite directions of each other

Question 10

Hunds Rule

Answer 10

A.) If 2 or more orbitals of equal energy are available, electrons will occupy them singly before filling the orbitals in pairs

B.) The unpaired electrons must have parallel spins (arrows facing in the same direction)

Question 11

What Rule Is Violated:

1) The lowest energy level is skipped

2) The 3s orbital section holds 2 electrons (arrows) facing the same way

3) The single arrow in 3p^2 is facing down

4) There are 2 electrons in ‘p’ orbital that are in the same box (notation is only 3p^2)

Answer 11

1) Aufbau

2) Pauli Exclusion

3) Hunds pt. B

4) Hunds pt. A

Question 12

Valence Electrons

Answer 12

The electrons highest occupied energy level of an element’s atom