Which of the following properties of halogens | vedclass

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(C) $1.$ Ionization energy decreases down the group as the atomic size increases.$2.$ Ionic radius increases down the group due to the addition of new

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$II, IV$

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(C) $1.$ Ionization energy decreases down the group as the atomic size increases.$2.$ Ionic radius increases down the group due to the addition of new shells.$3.$ Bond energy of $X_2$ molecules generally decreases down the group (except for $F_2$ due to inter-electronic repulsion).$4.$ Enthalpy of vaporization increases down the group due to the increase in magnitude of van der Waals forces with increasing molecular size.Therefore,properties $(II)$ and $(IV)$ increase with increasing atomic number.

Which of the following properties of halogens increase with increasing atomic number?
$(I)$ Ionization energy $(II)$ Ionic radius
$(III)$ Bond energy of the $X_2$ molecule $(IV)$ Enthalpy of vaporisation

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Which of the following properties of halogens increase with increasing atomic number?$(I)$ Ionization energy $(II)$ Ionic radius$(III)$ Bond energy of the $X_2$ molecule $(IV)$ Enthalpy of vaporisation