Question

The arrangement of elements in the Modem Periodic Table is based on their
(a) increasing atomic mass in the period
(b) increasing atomic number in the horizontal rows
(c) increasing atomic number in the vertical columns
(d) increasing atomic mass in the group

Answer 1

Answer:

b

Explanation:

the arrangement of elements in the modern periodic table is based on their increasing atomic number in the horizontal rows

Answer 2

Explanation:

hey

your answer is

*B*

hope it helps u