Question

Write the names and atomic number of the following elements : -

a ) Fourth Alkali metal

b) Sixth Noble gas

c) First Inner transition Element

d) Fifth element of the first transition series

Answer 1

A)Rubidium
Atomic number-37
B)Radon
Atomic number-86
C)Cerium
Atomic number-58
D)There is no fifth element in first transition series

Answer 2

1) Rubidium, 37
2) Radon,86
3) Cerium, 58
4) Manganese, 25