The first ionisation energies of alkaline ear | vedclass

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Question

(A) The first ionisation energy is the energy required to remove the most loosely bound electron from an isolated gaseous atom.Alkaline earth metals $

Vedclass · Accepted Answer

There is an increase in the nuclear charge of the alkaline earth metals

Vedclass · Answer

(A) The first ionisation energy is the energy required to remove the most loosely bound electron from an isolated gaseous atom.Alkaline earth metals $(Group \ 2)$ have a smaller atomic size and a higher effective nuclear charge compared to their corresponding alkali metals $(Group \ 1)$ in the same period.Due to the smaller size and higher effective nuclear charge,the valence electrons in alkaline earth metals are more strongly attracted by the nucleus,making them harder to remove.Therefore,the correct option is $(A)$.

The first ionisation energies of alkaline earth metals are higher than those of the alkali metals. This is because

Similar Questions

Which of the following processes represents the highest ionization energy?

Which of the following processes requires the largest amount of energy?

Triad-$I$ $[N^{3-}, O^{2-}, Na^{+}]$
Triad-$II$ $[N^{+}, C^{+}, O^{+}]$
Choose the species of lowest $IP$ from triad-$I$ and highest $IP$ from triad-$II$ respectively.

Which of the following is a favourable factor for cation formation?

$A \to A^{+} + e, E_{1}$ and $A^{+} \to A^{2+} + e, E_{2}$. The energy required to pull out the two electrons are $E_{1}$ and $E_{2}$ respectively. The correct relationship between the two energies is:

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