Core Electrons

Question 1

Chemical Bonding?

Answer 1

It is the joining of atoms to form new substances.

Question 2

Chemical Bond?

Answer 2

It is the force of attraction that holds two atoms together.

Question 2

How to find the amount of Core Electrons?

Answer 2

Total Electrons-Number of Valance Electrons=Core Electron

Question 3

Valence Electron?

Answer 3

They are the electrons in the outermost energy level of an atom.

Question 4

Which Energy Level is closest to the nucleus and only holds two electrons?

Answer 4

First Energy Level

Question 5

When an Energy Level is full, what happens?

Answer 5

Electrons are put into the second energy level.

Question 6

How do you determine how many valence electrons an atom of an element has?

Answer 6

I. Atoms in groups 1 and 2 have the same number of Valence Electrons as their group number.

II. Atoms in groups 3-12 do not have a specified number of valence electrons.

III. Atoms in groups 13-18 have 10 fewer valence electrons than their group number. However, Helium atoms only have 2 valence electrons.