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View Full Version : Is it true elements in the same period have the same number of shells (energy level)


cutiee
Jan 19, 2011, 05:15 PM

DrBob1
Jan 19, 2011, 06:26 PM
No. The first two columns and last six (s and p electrons) are in the same shell; the d block are one shell lower and the f electrons are two shells lower.