Going down in a group from fluorine to iodine, which of the following properties decreases?
A
Ionic radius
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B
Ionisation energy
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C
Oxidising power
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D
Electronegativity
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Solution
The correct options are B Ionisation energy C Oxidising power D Electronegativity As we move down the group, i.e., from fluorine to iodine, electronegativity, ionisation energy and oxidising power of halogens decrease but ionic radius increases.