U1-2-5 - Electron Arrangement

Question 1

How many electrons can fit in this shell?

Answer 1

2

Question 2

How many electrons can fit in this shell?

Answer 2

8

Question 3

What is a valence electron?

Answer 3

An electron in the outermost electron shell (furthest from the nucleus).

Question 4

This question is about electrons

All elements in the same group have the same no. of …..

Answer 4

valence electrons.

(e.g. all group 1 elements have 1 valence electron)

Question 5

This question is about electrons

All elements in the same period have the same no. of …..

Answer 5

occupied electron shells.

(e.g. all period 3 elements have 3 occupied shells)