Choose the nonmetallic elements from the list. Check all that apply.

A. yttrium

B. oxygen

C. boron

D. polonium

E. argon

F. gallium

G. carbon

Answer : A nonmetal is an element which lacks the features of metals.

In the given options there are only four elements which can be classified as non metals. They are as follows:

1. Oxygen

2. Boron

3. Carbon

4. Argon.

Rest all are metals or metalloids in nature.