What is penultimate & anti-penultimate shells?

Asked by  | 18th Aug, 2011, 11:12: PM

Expert Answer:

penultimate means" last" so penultimate shell is the name given to the last shell .
Anti-Penultimate shells are the ones to the inner side of penultimate shells or the third from the last.

Answered by  | 19th Aug, 2011, 05:01: PM

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