| $IE_1$ | $IE_2$ | $IE_3$ | $IE_4$ | $IE_5$ | $IE_6$ |
| 1500 | 2850 | 4580 | 7480 | 9440 | 53270 |
\textbf{202-} The successive ionization energies of an element from period 2 are given below in $\text{kJ.mol}^{-1}$; the difference between the lowest and highest of these values is one unit, and in the valence shell of this atom there are several electrons with spin $+\dfrac{1}{2}$. (Choose the answer from right to left.)
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\begin{tabular}{|c|c|c|c|c|c|}
\hline
$IE_1$ & $IE_2$ & $IE_3$ & $IE_4$ & $IE_5$ & $IE_6$ \\
\hline
1500 & 2850 & 4580 & 7480 & 9440 & 53270 \\
\hline
\end{tabular}
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(1) $3.0$ \hfill (2) $3.4$ \hfill (3) $4.8$ \hfill (4) $4.4$
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