The first ionisation energies of alkaline ear | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

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

What may be the first ionisation energy of $Na$ if it has an effective nuclear charge of $1.84$,assuming the Bohr model of the $H$-atom is effective on it? (in $eV$)

Which of the following has the minimum ionization energy?

In the photoelectric effect,if the work functions of $Li$,$Na$,and $Rb$ are $2.41 \ eV$,$2.30 \ eV$,and $2.09 \ eV$ respectively,the work function of $K$ could approximately be in $eV$?

Which of the following represents the correct order of increasing first ionization enthalpy for $Ca, Ba, S, Se$ and $Ar$?

The first ionisation potential of $Na$,$Mg$,$Al$ and $Si$ are in the order :-

Vedclass Test Series

Exam Paper Generator

Online Exam Module