Question

identifying nonmetals by location on choose the nonmetallic elements from the list. check all that apply. yttrium oxygen boron polonium argon gallium carbon

Explanation:

To identify nonmetallic elements, we recall their properties and positions in the periodic table. Nonmetals are typically poor conductors of heat and electricity, and are found on the right side of the periodic table (except hydrogen).

• Yttrium (Y) is a metal (transition metal).
• Oxygen (O) is a nonmetal (group 16, nonmetal).
• Boron (B) is a metalloid, but sometimes considered a nonmetal in some contexts (it has nonmetal - like properties in some cases).
• Polonium (Po) is a metalloid (but near the metal - nonmetal boundary, however, in the context of this question, it's often classified as a metalloid, but let's check the others first).
• Argon (Ar) is a noble gas, which is a nonmetal (group 18, nonmetal).
• Gallium (Ga) is a metal (post - transition metal).
• Carbon (C) is a nonmetal (group 14, nonmetal).

So the nonmetallic elements from the list are oxygen, argon, carbon, and boron (boron is a metalloid but is often included in non - metal - like classifications in basic chemistry for such questions).

Answer:

oxygen, boron, argon, carbon