Atom’s

Column

Number

and

Electrons

Number

name

0

1

2

3

4

5

6

7

8

Hydrogen

H(+)

H

H(−)

(Shells)

0, 0

0, 1

0, 2

Lithium

Li(+)

Li

Li(−)

Beryllium

Be(+)

Be

Be(−)

Boron

B(+)

B

B(−)

Carbon

C(+)

C

C(−)

Nitrogen

N(+)

N

N(−)

Oxygen

O(+)

O

O(−)

Fluorine

F(+)

F

F(−)

(Shells)

2, 0

2, 1

2, 2

2, 3

2, 4

4, 3

6, 2

8, 1

10, 0

Sodium

Na(+)

Na

Na(−)

Magnesium

Mg(+)

Mg

Mg(−)

Aluminum

Al(+)

Al

Al(−)

Silicon

Si(+)

Si

Si(−)

Phosphorus

P(+)

P

S(−)

Sulfur

S(+)

S

S(−)

Chlorine

Cl(+)

Cl

Cl(−)

(Shells)

10, 0

10, 1

10, 2

10, 3

10, 4

12, 3

14, 2

16, 1

18, 0