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An element A is soft and can be cut with...

An element A is soft and can be cut with a knife. This is very reactive to air and cannot be kept open in air. It reacts vigorously with water. Identify the element from the following. 

A

Mg

B

Na

C

P

D

Ca

Text Solution

Verified by Experts

The correct Answer is:
B
From the properties of the element described In the question, it can be said surely that the element IS sodium (Na).
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NCERT EXEMPLAR-METALS AND NON- METALS-Metals And Non- Metals
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