Science, asked by jainsahil2511, 1 year ago

Which of the following pairs, can not be iso-electronic?

SANJAY1604: Jasinsahil2511 where are the pairs???

Answers

Answered by AmritaRajput

It is because of the shielding effect that the ionization energy decreases from top to bottom within a group. From this trend, Cesium is said to have the lowest ionization energy and Fluorine is said to have the highest ionization energy (with the exception of Helium and Neon).

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