How many protons, neutrons and electrons are in ?
Atomic number of iron (Fe) = 26
So number of protons = 26
Number of protons = number of electrons
But To gain 3+ charge it should loose 3 electron. So number of electrons present = 26-3 = 23
Now atomic mass = 56 (Given).
Number of neutrons = atomic mass - number of protons = 56-26 = 30
If then ?
Functions of the environment
A is