Question

The alkali metals 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

Answer 1

Hola mate

(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 (28.5°C) and will melt at 30°C.

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Answer 2

Answer:

The correct option is d.