Question

Arrange the following as per instructions given in the brackets:

(i) Cs, Na, Li, K, Rb (increasing order of metallic character) (4)

(ii) Mg, Cl, S, Na, Si (decreasing order of atomic size)

(iii) Na, K, Cl, S, Si (increasing order of ionisation energy)

(iv) Cl, F, Br, I (increasing order of electron affinity)

(v) He, Ar, Ne (increasing order of the number of electrons shells)

(vi) Na, Li, K (increasing ionisation energy)

(vii) F, Cl, Br (increasing electronegativity)
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Answer 1

The following are arranged as per instructions given in the brackets:

(i) Cs, Na, Li, K, Rb (increasing order of metallic character) (4)

Li < Na < K < Rb < Cs

(ii) Mg, Cl, S, Na, Si (decreasing order of atomic size)

Na > Mg > Si > S > Cl

(iii) Na, K, Cl, S, Si (increasing order of ionisation energy)

K < Na < Si < S < Cl

(iv) Cl, F, Br, I (increasing order of electron affinity)

I < Br < F < Cl

(v) He, Ar, Ne (increasing order of the number of electrons shells)

He < Ne < Ar

(vi) Na, Li, K (increasing ionisation energy)

Li < Na < K

(vii) F, Cl, Br (increasing electronegativity)

Br < Cl < F

Answer 2

Answer:

The following are arranged as per instructions given in the brackets:

(i) Cs, Na, Li, K, Rb (increasing order of metallic character) (4)

Li < Na < K < Rb < Cs

(ii) Mg, Cl, S, Na, Si (decreasing order of atomic size)

Na > Mg > Si > S > Cl

(iii) Na, K, Cl, S, Si (increasing order of ionisation energy)

K < Na < Si < S < Cl

(iv) Cl, F, Br, I (increasing order of electron affinity)

I < Br < F < Cl

(v) He, Ar, Ne (increasing order of the number of electrons shells)

He < Ne < Ar

(vi) Na, Li, K (increasing ionisation energy)

K < Na < Li

(vii) F, Cl, Br (increasing electronegativity)

Br < Cl < F

Explanation: