Question

Based on group valency of elements state the formula :
(i) Halides of the elements of group 13 ,and
(ii) Compounds formed when an element of group to combines with an element of group 16

Answer 1

Dear Student,
(i) Halides of group 13
The valency of group 13 elements = group number -10 =3
So the oxidation state of metal M =+3
The oxidation state of Cl = -1
So the general formula = MCl₃
(ii) Group 2 elements have number of valence electrons = 2

Group 16 have valence electrons = 16-10 =6 so the valency will be 2
Let the element of group 2 be M
and group 16 be N
$M^{2+}+N^{-2}$
Formula of the compound MN
Regards!