Question

Which of the following statements about the Modern Periodic Table is correct?

• A. It has 18 horizontal rows known as Periods
• B. It has 7 vertical columns known as Periods
• C. It has 18 vertical columns known as Groups
• D. It has 7 horizontal rows known as Groups

Answer 1

The correct option is C

It has 18 vertical columns known as Groups

Explanation for the correct options:

(C)It has $18$ vertical columns known as Groups.

• In the modern periodic table, the columns are known as groups.
• There are $18$ vertical groups are there in the periodic table.
• Elements from the same groups have similar chemical characteristics.

Explanation for the incorrect options:

(A)It has 18 horizontal rows known as Periods.

• The modern periodic table has $7$ horizontal rows which are known as periods.

(B)It has $7$ vertical columns known as Periods.

• The modern periodic table has $18$ vertical columns known as groups.

(D)It has $7$ horizontal rows known as Groups.

• The modern periodic table has $7$ horizontal rows known as periods.

Hence, option (C) is correct, It has $18$ vertical columns known as groups is a correct statement about the Modern Periodic Table.