Question

Which statement is true about OH-?

Answer 1

The correct statement about OH ions :  

It’s a polyatomic anion because it has more than one atom and a negative charge.

Further explanation

Ions are atoms that have a charge

Ions are formed because capturing or releasing electrons.

Ions can be differentiated based on the number of constituent elements they become

• 1. monatomic ion, if it comes from one element, such as K⁺, Mg²⁺, Cl⁻

• 2. polyatomic ion, if it comes from two or more elements such as PO₄³⁻, SO₄²⁻, ClO₃⁻

Based on the charge, ions can be divided into:

• 1. positive ion (cation)

happens if the atom releases electrons, for example

Al³⁺, ---> Al⇒ Al³⁺ + 3e⁻

Pb²⁺, ----> Pb⇒ Pb²⁺ + 2e-

• 2. negative ion (anion)

happens if the atom captures electrons, like

S²⁻, S + 2e⁻⇒ S²⁻

F⁻, F + e⁻⇒ F⁻

OH- ions are usually associated with bases

According to Arrhenius, defines that

A base is a compound that can release OH- ions

Example:

NaOH (aq) -> Na + (aq) + OH- (aq)

The amount of OH- ions that can be produced by base compounds is called base valence.

OH ions are formed from the elements O and H so that they are polyatomic ions

OH ions are negatively charged so they are called anions

Learn more

The net ionic equation

brainly.com/question/8885824

ion stability

brainly.com/question/1781595

ionic bonding

brainly.com/question/1603987

Keywords: ionic compounds, elements, cations, anions, polyatomic, monoatomic

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