Multiple choice

Regarding N, Al, P and Si, the second ionization enthalpy follow the order of

  1. N>P>Al>Si

  2. N>Al>P>Si

  3. Si>P>Al>N

  4. Al>P>N>Si

  5. N>Si>Al>P
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A Correct answer
Explanation

Second ionization enthalpy of N = 2856 KJ/mol Second ionization enthalpy of P = 1903 KJ/mol Second ionization enthalpy of Al = 1816 KJ/mol Second ionization enthalpy of Si = 1577 KJ/mol Hence, regarding N, Al, P and Si, the second ionization enthalpy follow the order of N>P>Al>Si.

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