Question

which of the given elements a,b,c,d and e with atomic numbee 2,3,7,10?and 30 respectively belong to the same period?

Answer 1

b,c and d belongs to same period

Answer 2

Hii Mate......

according to question :-

given that...

element = a,b,c,d,e

atomic number = 2,3,7,10,30

elements:-

atomic no.2= Helium (He)

,, ,, 3= Lithium (Li)

,, ,, 7=Nitrogen (N)

,, ,, 10=Neon (Ne)

,, ,, 30=Zinc (Zn)

Hope its help you.....