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Predict the position of element having atomic number 72 (Period number and group number)A. 5, 3B. 6, 3C. 6, 4D. 7, 4

Answer» Correct Answer - C
Electron configuration of 72 At . No. element
`{:([Xe]^(54),4f^(14),5d^(2),6s^(2),therefore"Period no. =6"):}`
G.p. No = 4


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