Question

1) Iron (1) oxide 11)
d) Following are the combining powers of the constituting elements of the
compounds shown in the table. Now, write down the formulae of these
compounds by criss-cross method :-
Combining power:-
Na : 1, AI:3, S:2, 0:2, Cl: 1
1)
Aluminium oxide ii) Sodium sulphide iii) Sodium chloride​

Answer 1

Answer:

aluminum oxide formulae Al2O3

2Al+3× 3O-2

sodium sulphide Na2S

2Na+ ×S-2

sodium chloride

Na+×Cl-=NaCl