Chapter 1.8 Electronic structure

Question 1

How many electrons can shells 1-4 hold up to?

Answer 1

1st shell- 2 electrons
2nd shell- 8 electrons
3rd- once there are more than 8 electrons in the third shell the fourth shell begins to fill up to eight.
4th- 8 electrons.

Question 2

What do you get when you combine group 1 elements (for example sodium) with water?

Answer 2

You get a salt (sodium hydroxide) + hydrogen

Question 3

What happens when group 1 elements are added to water?

Answer 3

Lithium + water ==> lithium hydroxide + hydrogen
sodium + water ==> sodium hydroxide + hydrogen
potassium + water ==> potassium hydroxide + hydrogen