Question

An atom 'm' of an element reacts with oxygen to form M2O3. Calculate the balency of the element 'm' .​

Answer 1

Answer:

3.

Explanation:

$M_{2}$$O_{3}$ is reacted in the following way:

∴ When the reaction takes place,

Valency(M)⇆Valency(O)

As Valency of Oxygen = 2,

M ← $O_{2}$

$M_{valency}$ → O

As we know, that in the formula we wrote the subscript of M as 2 and O as 3, the valency of M is 3.

Answer 2

Answer:

the valency of the element is 3

because it forms oxide like aluminum oxide ( Al2O3 ) .

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