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JEE CHEMISTRY MCQ: CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

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Successive first five ionisation energies of a particular element is 7.1, 14.3, 34.5, 46.8, 162.2 (in eV) respectively. The element is likely to be

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Correct option: B

The correct answer is Si because there is a significant jump between the 4th and 5th ionization energies, indicating that the 4th electron is being removed from a stable, noble gas-like configuration.

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