Approximate atomic weight ofa metal is 26.89. If its equivalent weight is 8.9, its exact atomic weight will be

Options

A. 26.7
B. 8.9
C. 26.89
D. 17.8

Answer

A

Explanation

Approximate atomic weight = 26.89
Equivalent weight = 8.9
Approximately valency=`("Approx. atomic weight")/("Equivalent weight")`
`=(36.67)/(8.9)=3.0`
Atomic weight = Valency `xx` Equivalent weight
`= 8.9 xx 3.0 =26.7 `