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 :

     [a]

Thus here bond angles between

\[{{X}_{4}}-M-{{X}_{2}}=180{}^\circ \]

\[{{X}_{1}}-M-{{X}_{3}}=180{}^\circ \]

\[{{X}_{5}}-M-{{X}_{6}}=180{}^\circ \]