Question

If all bond angles in $\ce{AX3}$ are the same, then which of the following are correct conclusions about $\ce{AX3}?$

 

(A) $\ce{AX3}$ must be polar.
(B) $\ce{AX3}$ must be planar.
(C) $\ce{AX3}$ must have at least 5 valence electrons.
(D) $\ce{X}$ must be connected to the central atom via single or double bonds.

My Attempt

This is clearly a case of $\mathrm{sp^2}$ hybridisation. So, I thought about molecules like $\ce{BF3}$. As the bond angle needs to be same, it must not be polar. $\mathrm{sp^2}$ has trigonal planar structure, so (B) must be correct.

But my book says that the answer is (D) only (this question was of single correct choice type).

Why are (B) and (C) not the answers and why is (D) the answer?

Question

If all bond angles in $\ce{AX3}$ are the same, then which of the following are correct conclusions about $\ce{AX3}?$

(A) $\ce{AX3}$ must be polar.
(B) $\ce{AX3}$ must be planar.
(C) $\ce{AX3}$ must have at least 5 valence electrons.
(D) $\ce{X}$ must be connected to the central atom via single or double bonds.

My Attempt

This is clearly a case of $\mathrm{sp^2}$ hybridisation. So, I thought about molecules like $\ce{BF3}$. As the bond angle needs to be same, it must not be polar. $\mathrm{sp^2}$ has trigonal planar structure, so (B) must be correct.

But my book says that the answer is (D) only (this question was of single correct choice type).

Why are (B) and (C) not the answers and why is (D) the answer?

So I have a question that is as follows:-

If all bond angles in AX$_3$ are the same then which of the following are correct conclusions about AX$_3$?

(A) AX$_3$ must be polar

(B) AX$_3$ must be planar

(C) AX$_3$ must have atleast 5 valence electrons

(D) X must be connected to the central atom via single or double bonds

My Attempt at the question:-

This is clearly a case of sp$^2$ hybridisation. So I thought about molecules like BF$_3$. So as the bond angle needs to be same, it must not be polar. sp$^2$ has trigonal planar structure so (B) must be correct.

But my book says that the answer is (D) only (this question was of single correct choice type). Why are (B) and (C) not the answers and why is (D) the answer?

Question

If all bond angles in $\ce{AX3}$ are the same, then which of the following are correct conclusions about $\ce{AX3}?$

(A) $\ce{AX3}$ must be polar.
(B) $\ce{AX3}$ must be planar.
(C) $\ce{AX3}$ must have at least 5 valence electrons.
(D) $\ce{X}$ must be connected to the central atom via single or double bonds.

My Attempt

This is clearly a case of $\mathrm{sp^2}$ hybridisation. So, I thought about molecules like $\ce{BF3}$. As the bond angle needs to be same, it must not be polar. $\mathrm{sp^2}$ has trigonal planar structure, so (B) must be correct.

But my book says that the answer is (D) only (this question was of single correct choice type).

Why are (B) and (C) not the answers and why is (D) the answer?