IA

IIA

IIIB

IVB

VB

VIB

VIIB

VIIIB

IB

IIB

IIIA

IVA

VA

VIA

VIIA

VIIIA

1

H

+1

H

-1

He

2

Li

+1

Be

+2

Metales

B

±3

C

+2, ±4

N

+1, ±3, +5

+2, +4

O

-2

F

-1

Ne

No metales

3

Na

+1

Mg

+2

Semimetales

Al

+3

Si

±4

P

±3, +5

S

±2

+4, +6

Cl

±1, +3

+5, +7

Ar

4

K

+1

Ca

+2

Sc

Ti

V

Cr

+2,+3

+4, +6

Mn

+2, +3, +4

+6, +7

Fe

+2, +3

Co

+2, +3

Ni

+2, +3

Cu

+1

+2

Zn

+2

Ga

Ge

±4

As

±3, +5

Se

±2

+4, +6

Br

±1, +3

+5, +7

Kr

5

Rb

+1

Sr

+2

Y

Zr

Nb

Mo

Tc

Ru

Rh

Pd

+2, +4

Ag

+1

Cd

+2

In

Sn

+2, +4

Sb

±3, +5

Te

±2

+4, +6

I

±1, +3

+5, +7

Xe

6

Cs

+1

Ba

+2

La

Hf

Ta

W

Re

Os

Ir

Pt

+2, +4

Au

+1

 +3

Hg

+1

 +2

Tl

Pb

+2, +4

Bi

Po

At

Rn

7

Fr

+1

Ra

+2

Ac