In the reaction,

$M g + 2 H_{2} O ⟶ X + H_{2}$

What is X?

M g O

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M g {(O H)}_{2}

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M g H_{2}

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None of these

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Solution

The correct option is B $M g {(O H)}_{2}$
1 mole magnesium reacts with 2 moles of water to produce 1 mole magnesium hydroxide and release hydrogen gas.

$M g + H_{2} O \to M g {(O H)}_{2} + H_{2} ↑$

Hence, option $B$ is correct.

Suggest Corrections

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