CBSE Class 11-science Answered
about F block elements
Asked by Praveen Rajasekaran | 12 Dec, 2012, 06:46: PM
Expert Answer
Orbital Order
1s, 2s, 2p, 3s, 3p, 4s, 3d, 4p, 5s, 4d, 5p, 6s, 4f, 5d, 6p, 7s, 5f, 6d, 7p, 8s.
Although this looks confusing, there is an easy way to remember.
As 3d is filled first, it is more appropriate to write 3d first and then 4s.
Answered by | 14 Dec, 2012, 11:11: AM
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