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KCET2015ChemistryClassification of Elements and Periodicity in Properties

For one of the element various successive ionization enthalpies (in ( kJ mol ⁻¹ ) ) are given below array |l|l|l|l|l|l| 2 * I.E & 1^ st & 2^ nd & 3^ rd & 4^ th & 5^ th & 577.5 & 1810 & 2750 & 11,580 & 14,820 array The element is

Options

  1. ASi
  2. B( P )
  3. C( Al )
  4. D( Mg )

Correct answer

C. ( Al )

Step-by-step solution

There is a large jump between ( IE ₃ ) and ( IE ₄ ) suggest that the element has three valence electrons. Therefore, from the given elements, the element having three valence electrons is AI.

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