Cesito ayuda con esto?

A)

Neutrones = 6 – 3 = 3

Protones = electrones = 3

b)

Neutrones = 31

Protones = electrones = 26

c)

Neutrones = 37 – 17 = 20

Protones = electrones = 17

d)

Neutrones = 19 – 9 = 10

Protones = electrones = 9

e)

Neutrones = 27 – 13 = 14

Protones = electrones = 13

f)

Neutrones = 16 – 8 = 8.