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'In s and p blocks electrons add to the last shell, in d-block electrons are added to the penultimate shell.' Pls explain in d-block elements which are the penultimate and ultimate sheels .. Plsss........... Thank you

'In s and p blocks electrons add to the last shell, in d-block electrons are added to the penultimate shell.'

Pls explain in d-block elements which are the penultimate and ultimate sheels ..
Plsss...........
Thank you

Grade:12

2 Answers

Mainak Chakraborty
34 Points
10 years ago

In s blocks, e's are added to the last orbital (l or m) subshell.

In d blocks, e's are added to the n-1 th shell due to fulfilled last subshell.

Geoffrey Richards
34 Points
10 years ago

Thanks a million Mainak Chakraborty !!!

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