Which term best describes c2o4 2− ? polyatomic anion polyatomic cation monatomic anion monatomic cation

Polyatomic anion

Explanation:

Polyatomic anion:

The polyatomic anion is substance having more than one atoms and carrying negative charge.

The poly is Greek word meaning "many". The given compound C₂O²⁻₄

is polyatomic anion because it is made up of more than one atom and have negative charge. The atoms in this compound act as a single unit. In this compound two carbon atoms combine with four oxygen atoms and oxygen carry -2 charge.

In contrast to polyatomic anion, polyatomic cations are also exist. In polyatomic cations positive charge is present in compound and it is also made up of more than one atoms.

the transfer of heat by electromagnetic radiation is called thermal radiation . it is usually carried out by electromagnetic waves in an energy range just below the visible spectrum, which is the infrared range.

so the answer would be radiation.

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