question_answer

In a regular octahedral molecule,\[M{{X}_{6}}\]the number of\[X-M-X\]bonds at\[180{}^\circ \]is

A)  three          

B)  two

C)  six            

D)  four

Correct Answer: A

Solution :

 In octahedral structure\[M{{X}_{6}},\]the six hybrid orbitals\[(s{{p}^{3}}{{d}^{2}})\]are directed towards the corners of a regular octahedral with an angle of\[90{}^\circ \]. According to following structure of\[M{{X}_{6}},\]the number of\[X-M-X\]bonds at 180° must be three.