Observe the following data ($ \Delta_i H_1, \Delta_i H_2 $ and $ \Delta_{eg} H $ represent the first,second ionisation enthalpies and electron gain enthalpy respectively).
Element$ \Delta_i H_1 $ $( kJ \ mol^{-1} )$$ \Delta_i H_2 $ $( kJ \ mol^{-1} )$$ \Delta_{eg} H $ $( kJ \ mol^{-1} )$
$ I $$ 520 $$ 7300 $$ -60 $
$ I.I $$ 490 $$ 3051 $$ -48 $
$ III $$ 1681 $$ 3374 $$ -328 $
$ IV $$ 2372 $$ 5251 $$ +48 $

Using the data,identify the most reactive metal.

  • A
    $ II $
  • B
    $ I $
  • C
    $ IV $
  • D
    $ III $

Explore More

Similar Questions

When $KI$ is passed through a solution containing $KCl, KF,$ and $KBr$,what happens?

In the following,the element with the highest electropositivity is

Among the given configurations,identify the element which does not belong to the same family as the others?

The element with atomic number $Z = 117$ should:

Among $Al_2O_3$,$SiO_2$,$P_2O_3$,and $SO_2$,the correct order of acidic strength is:

Vedclass Products

For Students

Vedclass Test Series

Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.

Start Free Trial
For Teachers

Exam Paper Generator

Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.

Try Free
For Institutes

Online Exam Module

Live online exams with unlimited students, 360° analytics & white-label branding.

See Demo