QVid: How Atoms Bond-Ionic Bond (3min)

Protons will never change.

• True

• False

Not only does the atomic number tell you the number of protons, but it also tells the number of...

• electrons

• neutrons

• nucleus

• atoms

Categorize the particle with the charge

Groups:

(a) Proton

,

(b) Electron

• negative

• positive

Atoms often want ___ electrons in their outer shell. It's called the octet rule because of this number.

• 8

• 2

• 1

• 25

After chlorine picked up that electron, how many did it have in it's outer (valence) shell?

• 8

• 2

• 1

• 25

How many electrons does sodium now have in it's new outer shell?

• 8

• 3

• 1

• 15

After chlorine gains an electron it has more electrons than protons. What is the charge on chlorine now?

• +

• -

• 0

• U