Question

The `Mw` of a oxide of an element is 44. The `Ew` of the element is 14. The atomic weight of the element is
A. 14
B. 28
C. 42
D. 56

Answer 1

Correct Answer - A
Let the formula of oixde `= M_(2) O_(x) = 44`
`2 xx M + x xx 16 = 44`
`2 (E xx x ) + xx 16 = 44`
`2(14 xx x) + 16x = 44`
`:. X = 1`
Atomic weight `= 14 xx 1 = 14`