A) 26.89
B) 8.9
C) 17.8
D) 26.7
Correct Answer: D
Solution :
\[\text{Valency}=\frac{26.89}{8.9}=3\] at. mass = \[\text{Eq}\text{.wt}\times \text{valency}=8.9\times 3=26.7\]
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