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Q.

Atomic number of an element is 111. Then its group number and period number in the longform of periodic table respectively

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a

VII B, 7th period

b

III B, 7th period

c

I B, 6th period

d

I B, 7th period

answer is D.

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Detailed Solution

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its e configuration is 7s1,5f14,6d10, in the series of Cu, Ag, Au 

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