Question

Deduce the molecular formulae of the compound obtained from the following pairs of element by the cross multiplication method.
A. C (Valency 4)& Cl (Valency 1)
B.N(Valency 3)& H(Valency 1)
C.C(Valency 4)& O(Valency 2)
D.Ca(Valency 2)& O(Valency 2)

Answer 1

Answer:

A. CCl4

B. NH3

C. CO2

D. CaO

Explanation:

A.

4 1

C + Cl=CCl4

(B)

3 1

N + H=NH3

(C)

4 2

C +O=C2O4=CO2

(D)

2 2

CA + O=CaO

Answer 2

Answer:

Deduce the molecular formula of the compound obtained from the following

pairs of elements by the cross multiplication method.

a) N (Valency 3) & H(Valency 1)

b) C (Valency 4) & O(Valency 2)

c) Ca (Valency 2) &O(Valency 2)

Explanation: