Question

The periodic table is organixed so that atoms of elements with the same number of valence electrons are in

a. diagonals
b. cells.
c. period (row)
d. groups (columns)​

Answer 1

Columns

Step-by-step explanation:

Diagonals are a of no importance in the Periodic Table

cells are non applicable,

rows organize the number of orbitals in an atom

Answer 2

Answer: The correct answer is Option d.

Step-by-step explanation:

Elements in a periodic table are distributed in 7 Periods and 18 Groups. The elements are distributed on the basis of increasing atomic numbers.

Periods are known as horizontal rows and groups are known as vertical columns.

In a period, the number of shells around the nucleus remains the same but the valence electrons keep on increasing as we move from left to right.

For Example: In Period 2, the number of valence shells increases from 1 (for lithium) to 8 (for neon)

In a group, the number of shells around the nucleus keeps on increasing but the valence electrons remains the same as we move from top to bottom.

For Example: For Group 1, the number of valence electrons are 1

Hence, the correct answer is Option d.