Electron Distribution

Hydrogen 1

H

Mass Number: 1

(+1) )1

Valence e-: 1

H

Helium 2

He

Mass Number: 4

(+2) )2

Valence e-: 2

•He•

Lithium 3

Li

Mass Number: 7

(+3) )2)1

Valence e-: 1

Li

Beryllium 4

Be

Mass Number: 9

(+4) )2)2

Valence e-: 2

•Be•

Boron 5

B

Mass Number: 11

(+5) )2)3

Valence e-: 3

•B•

Carbon 6

C

Mass Number: 12

(+6) )2)4

Valence e-: 4

•C•

Nitrogen 7

N

Mass Number: 14

(+7) )2)5

Valence e-: 5

:

•N•

Oxygen 8

O

Mass Number: 16

(+8) )4)6

Valence e-: 6

:O:

Fluorine 9

F

Mass Number 19

(+9) )2)7

Valence e-: 7

:F:

:

Neon 10

Ne

Mass Number: 20

(+10) )2)8

Valence e-: 8

:

:Ne:

:

Sodium 11

Na

Mass Number: 23

(+11)  )2)8)1

Valence e-: 1

Na

x

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