Question

An element X is soft and can be cut with a knife easily. This is very reactive with air and cannot be kept open with air. It reacts vigorously with water. Name the element X.

Answer 1

Answer:

sodium

Explanation:

it is soft and belong to group 1  and it is a alkali metal it reacts vigrously with air and hence it is stored in kerosene

Answer 2

Answer:

its sodium (NA)

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