question_answer

Like CO why its analog of SiO is not stable.

Answer:

                CO is a resonance hybrid of the following two structures: Thus, CO contains \[p\pi -p\pi \] multiple bonds. This is due to the reason that carbon has a strong tendency to form \[p\pi -p\pi \] multiple bonds due to its small size and high electro negativity. Silicon, on the other hand, because of its bigger size and lower electro negativity has no tendency to form \[p\pi -p\pi \] multiple bonds and hence Si does not form SiO molecule analogous to CO molecule.