Question

Rank the elements by effective nuclear charge, Zefr, for a valence electron. Highest ze Lowest Z Answer Bank Be about us Careers privacy policy terms of use contact us help

Answer 1

The effective nuclear charge increases along a period. The atomic radius decreases along a period and increases down the group. The detailed solution is given below:

Asurer Efestie Nuckas Charge CZf inaae alo a period Alateat But to chedkHai Li (z-3) 3- .7 .3 Zett s2 2s2 Be CZ-4) a.0s 1X o.3S t xo.8S Zfp B CZS) Is 2s2 2p 2x o 35+ 2X O,8S - 5- 8:4 2. 6 Is2 2s2 2ps 4xO 35 2xo.8S NCZ=7 3.1 Zefft 3.9 7-3.1 Is2 2s22p 6 KO- 35 2X0 85 = 3.8 FCZ92 ৭-38 = Zeff 5.a Order of Zeff CHighest) F NB Be 24 (lowest)

Atomie Radiu decaeases aloug as the no. fedi the sauae e iAcueases So theathactio toad nucleus dud ta ize decreaes pesiad a jACAeaes So the a1des ot Atouic adisi K Ca >Ga> Ge As Se BrKr (3) The atmie nadisinereases aleng a darawosda arenent in gheup So the onder of Atomic Radius is Rb Ba S Ca 2