A) volatility increases from\[{{H}_{2}}O\]to\[{{H}_{2}}S\]and then decreases
B) volatility increases from\[{{H}_{2}}O\]to \[{{H}_{2}}Se\]
C) volatility decreases from\[{{H}_{2}}O\]to\[{{H}_{2}}Se\]
D) none of the above
Correct Answer: A
Solution :
: Volatility increases abruptly from\[{{H}_{2}}O\]to \[{{H}_{2}}S\] and then decreases from\[{{H}_{2}}S\]to\[{{H}_{2}}Te\]. Abnormally low volatility of\[{{H}_{2}}O\]is due to hydrogen bonding other elements, being less electronegative, do not form hydrogen bonding, their hydrides are gases.
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