Choose the correct statement about the process (I) and (II).

$N a_{(g)}^{+} (I) - \to N a_{(g)} (I I) - - \to N a_{(s)}$

(I)

energy released.

(I I)

energy absorbed

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In both

(I)

and

(I I)

energy is absorbed

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In both

(I)

and

(I I)

energy is released

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(I)

energy absorbed,

(I I)

energy released

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Solution

The correct option is B In both $(I)$ and $(I I)$ energy is released
The first process represents the electron affinity of $N a^{+}$ ion which is negative.
The second process represents sublimation of $N a$ . The sublimation energy is negative.
Thus, in both the processes, the energy is released.

Hence, the correct option is C.

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Choose the correct statement about the process (I) and (II).Na+(g)(I)−→Na(g)(II)−−→Na(s)

Choose the correct statement about the process (I) and (II).

$N a_{(g)}^{+} (I) - \to N a_{(g)} (I I) - - \to N a_{(s)}$