Question

Identify the correct statement, with respect to
modern periodic table (long form of periodic
table) for the still controversial issue.
(a) Placement of elements according to
increasing order of atomic numbers
(b) Position of hydrogen
(c) Position of transition elements
(d) Position of noble gases​

Answer 1

Answer:

option:a

Explanation:

a,according modren periodic table

Answer 2

The placement of Hydrogen is still a controversial issue as it behaves as a group 1 (alkali metals)as well as group 17(alkali earth metals) hence Hydrogen is always present at the top of the periodic table

I hope this helps