MCQ
The angular momentum of an electron depends on:
- Aprincipal quantum number
- ✓azimuthal quantum number
- Cmagnetic quantum number
- Dall of these
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| Element | $IE_1$ | $IE_2$ | $IE_3$ | $IE_4$ |
| $W$ | $10.5$ | $15.5$ | $24.9$ | $79.8$ |
| $X$ | $8$ | $14.8$ | $78.9$ | $105.8$ |
Other two elements $Y$ and $Z$ have outer electronic configuration $ns^2$ $np^4$ and $ns^2$ $np^5$ respectively. According to given information which of the following compound $(s)$ is/are not possible
$(a)\, W_2Y_3\, (b)\, X_2Y_3\, (c)\, WZ_2\, (d)\, XZ_2$
Assertion $(A)$ : Boron is unable to form $BF _{6}^{3-}$
Reason $(R)$ : Size of $B$ is very small.
In the light of the above statements, choose the correct answer from the options given below.