Question

the chemical formula of two different chlorides of iron (fe)are given below
1:Ferris chloride:fecl2
2:Ferric chloride:fecl3
hint: oxidation state of chloride atom (cl)=-1
: atomic number of iron (fe) =26
a:in which components iron (fe) shows +2 oxidation state
b: write the subshell electronic configuration of Fe³+
c:why does iron shows different oxidation state?
answer it frnds​

Answer 1

Answer:

(a) Fe shows + 2 OS (oxidation state) in FeCl2 as one of the rule of assigning oxidation numbers states that sum of oxidation numbers of atoms of elements in a molecule of a compound should be zero, according to it if Fe's OS is taken as x, then x+2(-1) = 0, x = 2

(b) Electronic configuration of Fe³+

   1s2 2s2 2p6 3s2 3p6 4s0 3d5

(c) Fe is a d block element and showing variable  oxidation state and valency is a characteristic property of d- block elements because they have incompletely filled ultimate and penultimate shells.