MCQ
Given below are two statements:

Statement $I$ : The metallic radius of $\mathrm{Na}$ is $1.86 \mathrm{~A}^{\circ}$ and the ionic radius of $\mathrm{Na}^{+}$is lesser than $1.86 \mathrm{~A}^{\circ}$.

Statement $II$ : Ions are always smaller in size than the corresponding elements.

In the light of the above statements, choose the correct answer from the options given below :

  • Statement $I$ is correct but Statement $II$ is false
  • B
    Both Statement $I$ and Statement $II$ are true
  • C
    Both Statement $I$ and Statement $II$ are false
  • D
    Statement $I$ is incorrect but Statement $II$ is true

Answer

Correct option: A.
Statement $I$ is correct but Statement $II$ is false
a
$\mathrm{r}_{\mathrm{Na}}>\mathrm{r}_{\mathrm{Na}^{+}}$

So, Statement $(I)$ is correct but size of anions are greater than size of neutral atoms.

So statement $(II)$ is incorrect.

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