When oxygen is passed through a solution of $Na_2SO_3$,we get:

Which of the following compounds has the maximum number of oxo groups $(M=O)$?

Oxygen is more electronegative than sulphur,yet $H_2S$ is acidic while $H_2O$ is neutral. This is because

When sulphur is boiled with $Na_2SO_3$,a compound $(A)$ is produced. $(A)$ on reaction with excess $AgNO_3$ solution gives a compound $(B)$,which after dissolving in water produces a black coloured sulphide $(C)$. Identify the compound $(A)$,$(B)$ and $(C)$.

Which of the following has the highest number of oxo groups?

Write the order of thermal stability of the hydrides of Group $16$ elements.