13 Which of the following oxides is unlikely to dissolve in aqueous sodium hydroxide?
A Al 2O3 B MgO C SO2 D SiO2
ANS is B
With this i am always confused by one thing ,as you go down the group the no. a of shells increase and charge density decreases , this would mean the distortion due to polarization decreases and thus thermal stability increases as bonds become harder to break , then how come when we dissolve hydroxides , down the group the solubility increases , bcos shouldnt be harder to break the bonds as you go down.........
