(D) For isoelectronic species,the number of electrons is the same,so the size is determined by the effective nuclear charge $(Z)$.As the nuclear charg

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(D) For isoelectronic species,the number of electrons is the same,so the size is determined by the effective nuclear charge $(Z)$.As the nuclear charge $(Z)$ increases,the force of attraction between the nucleus and the electrons increases,which pulls the electron cloud closer to the nucleus.Therefore,the size is inversely proportional to the nuclear charge: $\text{Size} \propto \frac{1}{Z}$.

Class 11 Chemistry Classification of Elements and Periodicity in Properties Atomic and Ionic radii

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The size of the isoelectronic species $Cl^{-}$,$Ar$,and $Ca^{2+}$ is affected by

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A
Principal quantum number of valence shell
B
Azimuthal quantum number of valence shell
C
Electron-electron interaction in the outer orbitals
D
Nuclear charge

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Classification of Elements and Periodicity in Properties

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Atomic and Ionic radii

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The increasing order of the ionic radii of the given isoelectronic species is:

EasyAIEEE 2012

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Describe the theory associated with the radius of an atom as it:
$(a)$ gains an electron
$(b)$ loses an electron

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$A$ trend common to both groups $I$ and $VII$ elements in the periodic table as atomic number increases is

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Among the ions $Mg^{2+}, O^{2-}, Al^{3+}, F^{-}, Na^{+}$ and $N^{3-}$,the ion with largest size and ion with smallest size are respectively

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Which of the following has the smallest size?

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The size of the isoelectronic species $Cl^{-}$,$Ar$,and $Ca^{2+}$ is affected by

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The increasing order of the ionic radii of the given isoelectronic species is:

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