MCQ
Which of the following is the most electropositive element
- ACarbon
- BCalcium
- CChlorine
- ✓Potassium
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$X$ $ = 1{s^2},\,\,2{s^2}2{p^6},\,\,3{s^2}3{p^6},\,\,4{s^2}$
and $Y$ $ = 1{s^2},\,\,2{s^2}2{p^6},\,\,3{s^2}3{p^5}$
The compound formed by combination of $X$ and $Y$ is
|
Reaction |
$\Delta H(KJ\,mol^{-1})$ |
$\Delta S(JK^{-1}\,mol^{-1})$ |
|
$I$ $II$ $III$ $IV$ $V$ |
$+98.0$ $-55.5$ $+28.3$ $-40.5$ $+ 34.7$ |
$+14.8$ $-84.6$ $-17.0$ $+24.6$ $0.0$ |
