JEE CHEMISTRY MCQ: CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

1 Hard

1 of 1

Analyzing +4 | -1

The third ionisation enthalpy is minimum for:

View answer and explanation

Correct option: D

Fe

Option D (

Fe

) is correct because

Fe^{2+}

has a

3d^6

configuration, and removing the third electron results in the stable

3d^5

configuration, requiring less energy.

More Questions from CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

Practice All Chapter MCQs →

X

X

\mathrm{O}, \mathrm{O}^{2-}, \mathrm{F}

\mathrm{F}^{-}