Question

the valency of iron​

Answer 1

Answer:

Iron (Fe) has an atomic number of 26, i.e. has 26 electrons. The energy of 4s and 3d orbital is similar (4s has slightly higher energy). Now, iron exhibits 2 valence states of +2 and +3. When iron loses the 2 4s electrons, it attains a valency of +2.

Answer 2

Answer:

atomic number of Iron is 26 .

so , k = 2

l = 8

m= 8

n = 8

here we can see that all orbits are complete but it can't be possible . because iron is metal ,so new electronic configuration of iron is :-

k = 2

l = 8

m = 14

n = 2

or

k = 2

l = 8

m = 13

n = 3

so iron can have two valency, either be 2 or 3 .

hope it helps you ✌️✌️