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The alkalimetals are low melting. Which ...

The alkalimetals are low melting. Which of the following alkali metal is expected to melt if the room temperature rises to `30^@C`?

A

Na

B

K

C

Rb

D

Cs

Text Solution

Verified by Experts

The correct Answer is:
D
Among alkali metals, melting point decreases as the strength of metallic bonding decreases with increasing size of the atom. Thus, Cs has the lowest melting point and melts at `30^@C`.
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