Question

Which of the following is NOT a group on the periodic table? A. Metalloids B. Alkali metals C. Halogens D. Alkali Earth metals

Answer 1

Answer:

A. Though they are found on the periodic table they are not groups. They are found between the metals and non - metals i.e group 3 and 4

Answer 2

Answer:

A. Metalloids

Explanation:

A group is a vertical column going down on the periodic table.

Group 1A is known as the alkali metals.

Group 2A is known as the alkali earth metals.

Group 7A or 17 elements are called halogens.

Metalloids do exist on the periodic table but they are diagonal starting with boron and ending with astatine. Therefore, metalloids are not a group on the periodic table.

Hope that helps.