Back to CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

NEET UG CHEMISTRY MCQ: CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

1 Hard

1 of 1

Application +4 | -1

The energy required to convert all atoms present in

1.2 \mathrm{~g}

magnesium to

{Mg}^{2+}

ions if

\mathrm{IE}

, and

\mathrm{IE}_2

of magnesium are

120 \mathrm{~kJ} \mathrm{~mol}^{-1}

and

240 \mathrm{~kJ} \mathrm{~mol}^{-1}

respectively

View answer and explanation

Correct option: A

18 \mathrm{~kJ}

Option A (18 kJ) is correct because it calculates the total energy required to convert 1.2g of magnesium to Mg2+ ions using the given ionization energies and the number of moles of magnesium.

More Questions from CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

Practice All Chapter MCQs →

The elements with zero electron affinity are S-I:

\mathrm{Cu}^{+2}

paramagnetic.

S-II: All the orbitals present in

\mathrm{Cu}^{+2}

ion are doubly occupied. Which of the following is the most electropositive element? The law of Octaves is not applicable to: Assertion (A): Mendeleev's arranged elements in horizontal rows and vertical columns.
Reason (R): Mendeleev's ignored the order of atomic weight thinking that the atomic measurements might be incorrect. Which of the following electronic configuration does not belong to same block as others?