Electron Configuration

Question 1

Atom is made up of what?

Answer 1

Protons, neutrons, and electrons

Question 2

Centre of an atom is called what?
What is it made of?

Answer 2

Nucleus is made of protons and neutrons

Question 3

How many electrons can the inner most shell, second shell, and third shell hold up to?

Answer 3

Inner most 2
Second shell 8
Third shell 8

Question 4

What is lithium’s electron configuration?
Atomic number is 3
And why?

Answer 4

2.1
Because the atomic number is 3

The inner most shell can only hold 2 electrons

So we have to add a second shell to fit the third electron

Question 5

What is a valence electron?

Answer 5

An electron in the outermost shell of an atom

Question 6

What is the electron configuration of argon?
Atomic number is 18

Answer 6

2.8.8

Because the atomic number is 18

Question 7

What is the electron configuration of carbon? Atomic number is 6

Does it have a full valence shell?

Answer 7

2.4

The atomic number is 6

No because the electrons outermost shell is incomplete.

Question 8

What is the fist step of figuring out the electron configuration?

Answer 8

Finding the atomic number