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An Element 'X' Reacts with O2 to Give a Compound with a High Melting Point. this Compound is Also Soluble in Water. the Element 'X' is Likely to Be: - Science

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MCQ

An element 'X' reacts with O2 to give a compound with a high melting point. This compound is also soluble in water. The element 'X' is likely to be:

Options

  • iron

  • calcium

  • carbon

  • silicon

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Solution

The compound having a high melting point which indicates that the compound is ionic. Calcium and oxygen react with each other and form CaO which has a high melting point and is water-soluble.
Hence, the correct answer is calcium.

Concept: Covalent Bond
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