EL3 Electron Configuration

Question 1

What is the maximum number of electrons in ‘s’ sub-shell?

Answer 1

2

Question 2

What is maximum number of electrons in ‘p’ sub shell?

Answer 2

6 (2 in each of 3 p orbitals)

Question 3

What is the maximum number of electrons in ‘d’ sub shell?

Answer 3

10 (5 x 2)

Question 4

List order in which sub-shells fill with electrons

Answer 4

1s, 2s, 2p, 3s, 3p, 4s, 3d, 4p, 4d, 4f

Question 5

What are the four pieces of info needed to describe an electron (its movement around the nucleus)?

Answer 5

• electron shell its in
• its sub shell
• its orbital within the sub shell
• its spin

Question 6

Why do electrons fill orbitals singularly before pairing up?

Answer 6

Keeps electrons as far away from each other as possible

Question 7

Give electron configuration for oxygen

Answer 7

Oxygen = 8 electrons

1s(2), 2s(2), 2p(4)

Question 8

Give electron configuration of titanium (22 electrons)

Answer 8

1s(2), 2s(2), 2p(6), 3s(2), 3p(6), 3d(2), 4s(2)

4s orbital fills before 3d

Question 9

What are the 3 p orbitals called?

Answer 9

Px, Py, Pz