An element with atomic number 20 will be placed in which period of the periodic table?

(a) 5
(b) 4
(c) 3
(d) 2

Anurag Mishra Professor Asked on 13th March 2016 in Chemistry.
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1 Answer(s)

Answer: (b) 4 

Anurag Mishra Professor Answered on 13th March 2016.
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