A) 2
B) 8
C) 18
D) 36
Correct Answer: C
Solution :
The fifth period of modem periodic table contain 18 elements. In Periodic Table, elements are arranged in order of their Atomic Number. The Atomic Number is number of Protons each atom has in its Nucleus. Hydrogen is the first element. There are 18 groups in the Periodic Table.You need to login to perform this action.
You will be redirected in
3 sec