Question
Of the given hydrides of group 16 Elements, which is the most stable thermodynamically?
Answer: Option C
:
C
As we go down the group, the electronegativity of the central atom decreases while the atomic size increases. This causes the E−H bond to weaken as we go down the group. Hence the thermal stability order is as H2O>H2S>H2Se>H2Te>H2Po
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:
C
As we go down the group, the electronegativity of the central atom decreases while the atomic size increases. This causes the E−H bond to weaken as we go down the group. Hence the thermal stability order is as H2O>H2S>H2Se>H2Te>H2Po
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