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An element reacts with oxygen to give a ...

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

A

calcium

B

carbon

C

silicon

D

iron

Text Solution

Verified by Experts

The correct Answer is:
A
calcium (Ca) combines with oxygen to form calcium oxide (caO) with very high melting point. It dissolves in water to form calcium hydroxide.
`2Ca + O_(2) to 2CaO`
`CaO + H_(2)O to underset("Calcium hydroxide (soluble)")(Ca(OH_(2))`
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