Question

how many groups are in the modern periodic table?
○ 12
○ 18
○ 22
○ 24

Explanation:

The modern periodic table is organized such that elements are grouped vertically. Each vertical column is called a group. By definition and standard knowledge in chemistry (a subfield of Natural Science), the modern periodic table has 18 groups. This is a well - established fact in the study of chemical elements and their periodic properties.

Answer:

B. 18