Number of electrons in the inactive shell = 0

Valence number

Positive charge

neutral

Negative charge

0

---

Xe

XeCl(−)

[10] -[12]

1

Na(+)

NaF

NaF2(−)

[10] [11]

[12]

..

2

BeH(+)

BeF2

BeF3(−)

[10]

[12]

[10] [11]

3

BF2(+)

BH3

BH4(−)

[10]

[10]

[11]

4

CF3(+)

CH4

SiH5(−)

[10]

[10]

[10]

5

PH4(+)

PCl5

PCl6(−)

[10]

[10]

[10]