10.2 ELECTRONS IN ATOMS

Question 1

What do electrons occupy?

Answer 1

Shells/energy/levels/orbit

Question 2

What are the rules to write electron configuration?

Answer 2

1. First shell can hold 2 electrons
2. Second shell onward can hold 8 electrons
3. Electrons fill first shell first, the remaining electrons will go to the next shell

Question 3

Do elements of the same group have the same amount of electrons at their outermost/valence shell?

Answer 3

Yes

Question 4

Do elements from the same period have the same number of shells?

Answer 4

Yes

Question 5

What does the electron arrangement determine for their chemical properties?

Answer 5

1. Outermost electrons determine where it can or cannot form bonds with other atoms
2. Determines its stability as well as what kind of reactions it will undergo