Correct Answer:- Option-D
Question45:-Among the following, which pair of atoms are isobars
A:-#2Ca and {Ar
B:-3/clana ci
C:-Pc ana [20
D:-All the above are isobars
Correct Answer:- Option-A
Question46:-How many groups and periods are there in modern periodic table ?
A:-7 groups and 8 periods
B:-8 groups and 18 periods
C:-8 groups and 7 periods
D:-18 groups and 7 periods
Correct Answer:- Option-D
Question47:-The inert element among the following....
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