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प्रश्न
State giving the reason the valency of:
Magnesium in magnesium oxide
कारण बताइए
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उत्तर
Valency of some elements that do not combine with hydrogen then becomes the combining power of the dement with an element whose valency is known.
Example: Magnesium combines with oxygen, forming magnesium oxide (MgO). Valency of oxygen is two, hence valency of magnesium is two.
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