Which of the following molecules has a three- | vedclass

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Question

(A) In the $NH_3$ molecule,the nitrogen atom is at the apex of a trigonal pyramid,and the three hydrogen atoms form the base. Rotation of the molecule

Vedclass · Accepted Answer

$NH_3$

Vedclass · Answer

(A) In the $NH_3$ molecule,the nitrogen atom is at the apex of a trigonal pyramid,and the three hydrogen atoms form the base. Rotation of the molecule by $120^o$ $(360^o / 3)$ about the $C_3$ axis passing through the nitrogen atom and the center of the hydrogen triangle results in an identical configuration. Therefore,$NH_3$ possesses a three-fold axis of symmetry ($C_3$ axis).

List-$A$	List-$B$
$(1)$ $AB_3E_2$	$(A)$ $BrF_5$
$(2)$ $AB_2E_2$	$(B)$ $NH_3$
$(3)$ $AB_5E$	$(C)$ $H_2O$
$(4)$ $AB_3E$	$(D)$ $ClF_3$

Which of the following molecules has a three-fold axis of symmetry?

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Match the following List-$A$ and List-$B$ correctly.

List-$A$ List-$B$

$(1)$ $AB_3E_2$ $(A)$ $BrF_5$

$(2)$ $AB_2E_2$ $(B)$ $NH_3$

$(3)$ $AB_5E$ $(C)$ $H_2O$

$(4)$ $AB_3E$ $(D)$ $ClF_3$

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