Question

Arrange the following elements as per the guidelines in brackets. 

(1) Na,Cl; Mg, P [in decreasing order of atomic size] 

(2) C,Li,F,N [in increasing order of electronegativity] [in increasing order of ionisation potential] 

(3) Cl,Al.Na,S [in increasing order of electron affinity] 

(4) Ar,He,Ne [in increasing order of number of electron shells]

Answer 1

1. Na, Mg, P, Cl 

2. Li, C, N, F 

3. Na, Al, S, Cl 

4. F, O, C, Li 

5. He, Ne, Ar