1.

In which of the following arrangements, the order is correct according to the property indicated against it ?

Answer»

`Al^(3+) lt Mg^(2+) lt Na^(+) lt F`-increasing ionic SIZE<BR>`B lt C lt N lt O` - increasing first ionization ENTHALPY
`I lt Br lt F lt CL`- increasing electron gain enthalpy (with negative sign)
`Li lt Na lt K lt Rb` -increasing metallic radius

Answer :A::C::D


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