Electron Structure

Question 1

What are shells?

Answer 1

• Shells are energy levels
• The energy increases as shell number increases
• The shell number is called the principal quantum number, n

Question 2

What is an atomic orbital?

Answer 2

• An atomic orbital is a region around the nucleus that can hold up to two electrons with opposite spins

Question 3

How many electrons can each shell hold?

Answer 3

1 = 2
2 = 8
3 = 18
4 = 32

Question 4

What are the different types of orbitals?

Answer 4

s,p,d,f

Question 5

What is the shape of s orbitals and how many electrons can it hold?

Answer 5

• spherical
• can hold 2 electrons

Question 6

What is the shape of a P orbital and how many electrons can it hold?

Answer 6

• dumb - bell
• has 3 orbitals each, can hold 6 electrons

Question 7

How many electrons can d and f hold?

Answer 7

d = 10
f = 14

Question 8

When forming an ion which electrons do you remove first?

Answer 8

• electrons from the highest energy level

Question 9

Label the s,p,d and f block.