each silicon atom is surrounded by four oxygen atoms and each oxygen atoms is bonded to two silicon atoms.

each silicon atom is surrounded by two oxygen atoms and each oxygen atom is bonded to two silicon atoms.

silicon atom is bonded to two oxygen atoms.

there are double bonds between silicon and oxygen atoms.

Phosphine is generally prepared in the laboratory by

heating white phosphorus with an aqueous solution of caustic soda.

heating phosphorus in a current of hydrogen.

decomposition of P 2 H 4 at 110 ° C .

heating red phosphorus with an aqueous solution of caustic soda.

What is inert pair effect?

The inert pair effect is the reluctance of s electrons of the outermost shell to participate in bonding. This is due to the poor screening effect of the d and f orbitals. This effect is observed among the p -block elements, due to which the lower oxidation state (two units less than the group oxidation state) becomes more stable for heavier elements in each group. For example in Pb , + 2 oxidation state is more predominant than the + 4 oxidation state.