Which element is a noble gases?

S

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T

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R

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P

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Solution

The correct option is D $T$
Noble gases have a stable full-filled configuration. It is not easy to remove an electron from such a configuration. Thus in a particular period, noble gases have maximum first ionisation energy.

' $T$ ' has maximum first ionisation energy from other given elements so it represents a noble gas.

Hence, option B is correct.

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\begin{matrix} List - I & List - II (I) X e F_{6} & (P) s p^{3} d^{3} (I I) X e O_{3} & (Q) s p^{3} d^{2} (I I I) X e O F_{4} & (R) s p^{3} (I V) X e F_{4} & (S) s p^{3} d (T) Distorted octahedral (U) Square planar \end{matrix}

Noble gases do not react with other elements because

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