Question

which of the explane of polyatomic icon​

Answer 1

Answer••••°°°°

Ionic Compounds Containing Polyatomic Ions. Polyatomic ions are ions which consist of more than one atom.

For example --) nitrate ion, NO3-, contains one nitrogen atom and three oxygen atoms. The atoms in a polyatomic ion are usually covalently bonded to one another, and therefore stay together as a single, charged unit.

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Answer 2

Answer:

A molecular ion is a covalently bonded set of two or more atoms, or of a metal complex, that can be considered to behave as a single unit and that has a net charge that is not zero. Unlike a molecule, which has a net charge of zero, this chemical species is an ion. . (The prefix poly- carries the meaning "many" in Greek, but even ions of two atoms are commonly described as polyatomic.)

In older literature, a polyatomic ion may instead be referred to as a radical (or less commonly, as a radical group). (In contemporary usage, the term radical refers to various free radicals, which are species that have an unpaired electron and need not be charged.)

A simple example of a polyatomic ion is the hydroxide ion, which consists of one oxygen atom and one hydrogen atom, jointly carrying a net charge of −1; its chemical formula is OH−

. In contrast, an ammonium ion consists of one nitrogen atom and ‘’four’’ hydrogen atoms, with a charge of +1; its chemical formula is NH+

4.

Polyatomic ions often are useful in the context of acid-base chemistry, and in the formation of salts.

Often, a polyatomic ion can be considered as the conjugate acid or base of a neutral molecule. For example, the conjugate base of sulfuric acid (H2SO4) is the polyatomic hydrogen sulfate anion (HSO−

4). The removal of another hydrogen ion produces the sulfate anion (SO2−

4).

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