The heat of formation of the oxides of third period are given in "kJ mol"^(-1) {:(,Na_(2)O,MgO,Al_(2)O_(3),SiO_(2),P_(4)O_(10),SO_(3),Cl_(2)O_(3)),(,-416,-602,-911,-2984,-395,+250):} Arrange these oxides in increasing order of stability.

The heat of formation of the oxides of third period are given in "kJ m

1.	The heat of formation of the oxides of third period are given in "kJ mol"^(-1) {:(,Na_(2)O,MgO,Al_(2)O_(3),SiO_(2),P_(4)O_(10),SO_(3),Cl_(2)O_(3)),(,-416,-602,-911,-2984,-395,+250):} Arrange these oxides in increasing order of stability.
Answer» Solution :More negative the value of heat of formation, lesser the amount of ENERGY left with the OXIDE. In this way the potential energy of the oxide is low and is more STABLE. `P_(4)O_(10) gt Al_(2)O_(3) gt SiO_(2) gt MgO gt Na_(2)O gt SO_(3) gt Cl_(2)O_(7)`