1.

Consider the following sequence of reaction: If electronic configuration of element X is [Ne]3s^(1), then which of the following order is incorrect regarding given enthalpies?

Answer»

`|DeltaH_(4)|=|DeltaH_(5)|`
`|DeltaH_(2)|gt|DeltaH_(1)|`
`|DeltaH_(2)|gt|DeltaH_(3)|`
`|DeltaH_(1)|=|DeltaH_(6)|`

Solution :(a) `|DeltaH_(4)|=|DeltaH_(5)|[(DeltaH_(eg))_(X)=(DeltaH_(IE))_(X^(-))]`
(b), (c)`toDeltaH_(3) gt DeltaH_(2) gtDeltaH_(1)`[SUCCESSIVE IE always higher than PREVIOUS IE]
(c) `|DeltaH_(1)|=|DeltaH_(6)|[(DeltaH_(IE))_(X)=(DeltaH_(eg))_(X^(-))]`


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