The correct order of the first ionization enthalpies is :

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Question:

The correct order of the first ionization enthalpies is :

  1. $\mathrm{Ti}<\mathrm{Mn}<\mathrm{Zn}<\mathrm{Ni}$

  2. $\mathrm{Ti}<\mathrm{Mn}<\mathrm{Ni}<\mathrm{Zn}$

  3. $\mathrm{Mn}<\mathrm{Ti}<\mathrm{Zn}<\mathrm{Ni}$

  4. $\mathrm{Zn}<\mathrm{Ni}<\mathrm{Mn}<\mathrm{Ti}$

Correct Option: , 2

Solution:

I.E. increases on moving left to right in a period.

$\therefore \mathrm{Ti}<\mathrm{Mn}<\mathrm{Ni}<\mathrm{Zn}_{\text {, }}$

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