MCQ
The electronic configuration of chromium is
- A$[Ne]3{s^2}3{p^6}3{d^4},4{s^2}$
- ✓$[Ne]3{s^2}3{p^6}3{d^5},4{s^1}$
- C$[Ne]3{s^2}3{p^6},4{s^2}4{p^4}$
- D$[Ne]3{s^2}3{p^6}3{d^1},4{s^2}4{p^3}$
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If the above equation is balanced with integer coefficients, the value of $c$ is ...........
(Round off to the Nearest Integer).
$Zn\left( s \right) + C{u^{2 + }}\left( {aq} \right) \rightleftharpoons Z{n^{2 + }}\left( {aq} \right) + Cu\left( s \right)$
Standard reaction enthalpy $\left( {{\Delta _r}{H^ - }} \right)$ ....... $\mathrm{kJ}$
$\begin{array}{*{20}{c}}
{O = C - C{H_2} - CH - CHO} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,|\,\,\,\,\,\,\,\,\,\,} \\
{OH\,\,\,\,\,\,H - C = O\,\,}
\end{array}$