Long Answer Type Questions : The first ionization enthalpy \( \left(\Delta H_{1}\right) \) and s...

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Long Answer Type Questions :
The first ionization enthalpy \( \left(\Delta H_{1}\right) \) and second ionization enthalpy \( \left(\Delta_{1} \mathrm{H}_{2}\right) \) of a few elements designated by
\( \mathrm{P} \) Roman numerals are shown below:

W
\begin{tabular}{|c|c|c|}
\hline Element & \( \Delta, H_{1}(\mathbf{k J} / \mathrm{mol}) \) & \( \Delta \mathrm{H}_{2}(\mathbf{k J} / \mathrm{mol}) \) \\
\hline I & 2372 & 5251 \\
II & 520 & 7300 \\
III & 900 & 1760 \\
IV & 1680 & 3380 \\
\hline
\end{tabular}
Which of the elements is likely to be
A noble gas?
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