question_answer

In a regular octahedral molecule, \[M{{X}_{6}}\]the number of \[X-M-X\]bonds at 180° 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°. According to following structure of \[M{{X}_{6}},\] the number of \[XMX\]bonds at 180° must be three.