MCQ
The difference between the mass number and the atomic number gives the $ .........$
- ✓Number of neutrons.
- BNumber of electrons.
- CCharge of an element.
- DNumber of protons.
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$(I) \,CO_3^{-2}$ $(II)\, XeF_4$
$(III)\, I^-_3$ $(IV)\, NCl_3$
$(V)\, BeCl_2$
(given $R = \frac{{8.3\,J}}\,{{mol - K}}$, $1$ $lit$ -$atm$ $=$ $100$ $J$ $ln$ $2$ $=$ $0.693$)

$\begin{array}{*{20}{c}}
{C{H_3} - C = CH - C{H_2} - COOH} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{OH\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}
\end{array}$