An element with atomic number 20 will be placed in which period of the periodic table [MNR 1986; UPSEAT 1999]

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

1.	An element with atomic number 20 will be placed in which period of the periodic table [MNR 1986; UPSEAT 1999]
A.	4
B.	3
C.	2
D.	1
Answer» B. 3