The oxide of an element possesses the fo...

The oxide of an element possesses the formula `M_2 O_3`. If the equivalent weight of the metal is 9, then its atomic weight will be

A

9

B

18

C

27

D

None of these

Verified by Experts

The correct Answer is:

C

Formula of the oxide `M_2 O_3` suggests that metal is trivalent i.e. `M^(3+)`.
` therefore ` atomic weight `= 9 xx 3 = 27`

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