The value of 2^ nd e^- gain enthalpy for O and S will be (in KJ /… - Vidyadip

MCQ

The value of $2^{nd}$ $e^-$ gain enthalpy for $O$ and $S$ will be (in $KJ / mole$)

A
$+ 590, + 780$
B
$-590, -780$
✓
$+ 780, + 590$
D
$-780, -590$

✓

Answer

Correct option: C.

$+ 780, + 590$

c
The second electron gain enthalpies (in $k J / m o l$ ) of oxygen and sulphur respectively are +780 and $+590 .$

Both are positive as they attain noble gas configuration after gaining two electrons.

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