Choose the correct statements about the hydrides of group 15 elements.A. The stability of the hydrides decreases in the order NH3>PH3>AsH3>SbH3>BiH3B. The reducing ability of the hydrides increases in the order NH3<PH3<AsH3<SbH3<BiH3C. Among the hydrides, NH3 is strong reducing agent while BiH3 is mild reducing agent.D. The basicity of the hydrides increases in the order NH3<PH3<AsH3<SbH3<BiH3Choose the most appropriate from the option given below:B and C onlyC and D onlyA and B onlyA and D only

The correct answer is A and B only.

Statement A is correct because the stability of the hydrides of group 15 elements decreases as we move down the group. This is due to the decrease in bond strength as the size of the central atom increases.

Statement B is also correct because the reducing ability of the hydrides increases as we move down the group. This is due to the increase in the size of the central atom, which makes it easier for the atom to donate its electron.

Statement C is incorrect because NH3 is not a strong reducing agent. In fact, it is a weak reducing agent. BiH3, on the other hand, is a strong reducing agent.

Statement D is incorrect because the basicity of the hydrides decreases as we move down the group, not increases. This is due to the decrease in the ability of the central atom to donate its lone pair of electrons.