1.

Which of the following order is correct for the property mentioned in brackets?

Answer»

`S^(2-) GT Cl^(-) gt K^(+) gt Ca^(+)" (Ionization energy)"`
`C lt N lt F lt O" (2nd Ionization energy)"`
`B gt Al gt Ga gt In gt Tl" (ELECTRONEGATIVITY)"`
`Na^(+) gt Li^(+)GTMG^(3+) gt Be^(2+) gt Al^(3+)"(lonic radius)"`

Answer :B


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