Question

Arrange the following elements as directed

(i) Ar, He, Ne (in increasing order of electron shells)

(ii) Li, F, C, O (in increasing order of electron affinity)

(iii) Cl, Mg, P, Na (in increasing order of atomic size)

(iv) Cl, Li, F, N (in increasing order of electronegativity)

(v) Cl, *, Al, Na (in increasing order of ionisation potential)

(vi) Increasing order of atomic size.

(vii) Increasing non-metallic character

(viii) Increasing ionisation potential.

(ix) Increasing electron affinity.

(x) Decreasing electronegativity.

Answer 1

(i) Increasing order of number of electron shells: He, Ne, Ar

(ii) Increasing order of electron affinity: Li, C, O, F

(iii) Increasing order of atomic size: Cl, P, Mg, Na

(iv) Increasing order of electronegativity : Li, N, Cl, F

(v) Increasing order of ionisation potential : Cl, *, Al. Na.

(vi) F>Cl>Br>I.

(vii) I<Br<Cl<F.

(viii) I<Br<Cl<F.

(ix) F<Cl<Br<l.

(x) F>Cl>Br>I.