Question

Valence electrons of which element experience the largest effective nuclear charge?

(A) Mg

(B) Na

(C) Si

(D) Al

(E) P

In which series do the ionic radii increase?

(A) Rb+, Br−, Se2−

(B) Br−, Se2−, Rb+

(C) Se2−, Br−, Rb+

(D) Br−, Rb+, Sr2+

(E) Rb+, Sr2+, In3+

Answer 1

Ansi P Valence electaohs Element has expeience the largest ettective nuclearchatge Ans: Tonic racli Tncrese Series Se BrRb -Br R Sr 2m 2t

Anst A Rb BrSe 2 Series ot Tnercesing Tonic Scidit Explanation You can See in (Rb BrSe have Same eleitranic Conbiguraton but their nicleatt charge toill clittrent. when the numbe at pratox inthe mucleus is Jherease then Tanic adius dlechease given Species

Rb+ Br no at proton 35 TA1Baoup Se no at paaton 34 ंलि 2t Sx no at pxaton 03. 3+ (have clittrent electaanic Cantgratien Compasa to othete So Accexcling to the option 3incasing Jonic Racli -Rb Bx Se 35 34 Bx Se Rb+ 34 3+ CH 2- 37 35 Se BY Rbt 37 34 35 Rb S2t 38 Bs 35 Rb S2 38 + 37 Note- the Jnorease innumbet of pactons in the mucleus them electons asremore attracted to the nucleus then Result alecrease in ionic Sraclius. J
- Ans: P Valence elections Element has experience the largest effective nuclear charge. .Jonic radi Increse Series - Sez, Br Rb + a> Br, Rist, So ² 2 +