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प्रश्न
State giving the reason the valency of –
Magnesium in magnesium oxide
टीपा लिहा
उत्तर
Valency of some elements which do not combine with hydrogen then becomes the combining power of the dement with an element whose valency is known.
e.g. Magnesium combines with oxygen forming magnesium oxide MgO
Valency of oxygen is two hence valencies of magnesium are Two.
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