Question

The molecular mas of 'X' is 106. Which contain a metal 'Y' in it. What is 'X' and 'Y' and valency of 'Y' in the compound respectively ?..
(A) CACO3, Ca, +2 (B) Na2CO3, Na, +2 (C) Na2CO3, Na, +1 (D) CACO3, Ca, +1 ​

Answer 1

Answer:

please refer to the attached

Answer 2

Answer:

Molecular weight of X

406

=(4a+96)

∵(4a+96)g X 406 contains X=4a g

∴10g of X 406 contains X=