Question

NOTES
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What is the ionization energy onder
of set of elements like Li, Bego​

Answer 1

ionisation energy along period increase as size decreases..

so electronic configuration of Li,Be are

Li--1s2,2s1

Be--1s2,2s2

here Be has stable electronic configuration , so not easy to extract electron from outer most shell

so,order is Be>>>>>Li...

,,,,, hope it helps uuu