MCQ
$Fe$ (atomic number $ = 26$ ) atom has the electronic arrangement
- A$2, 8, 8, 8$
- B$2, 8, 16$
- ✓$2, 8,14, 2$
- D$2, 8, 12, 4$
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Assume that there is no other way of consuming stored energy.Given : The enthalpy of evaporation of water is $45\,kJ\,mol ^{-1}$
Molar mass of $C , H$ and $O$ are $12.1$ and $16\,g\,mol ^{-1}$
$HC \equiv CH\mathop {\xrightarrow{{NaN{H_2},C{H_3}COC{H_3}}}}\limits_{{H^ + }} X\mathop {\xrightarrow{{H{g^{2 + }},{H_3}{O^ + }}}}\limits_{{H_2}O} Z$ is