Ions and Ionic Compounds

Front

What is an ion?

Back

An ion is an atom or molecule that has gained or lost one or more electrons, resulting in a net electric charge.

Front

What is the difference between cations and anions?

Back

Cations are positively charged ions formed by the loss of electrons, while anions are negatively charged ions formed by the gain of electrons.

Front

What is the octet rule?

Back

The octet rule states that atoms tend to gain, lose, or share electrons to achieve a full outer shell of eight electrons, resembling the electron configuration of noble gases.

Front

What is the electron configuration of neon?

Back

The electron configuration of neon is 1s² 2s² 2p⁶, indicating a full outer shell of eight electrons.

Front

How does fluorine achieve an octet configuration?

Back

Fluorine achieves an octet configuration by gaining one electron, resulting in a full outer shell.

Front

What is the formula for the compound formed by aluminum (Al³⁺) and sulfate (SO₄²⁻)?

Back

The formula is Al₂(SO₄)₃.

Front

What happens to magnesium (Mg) to achieve an octet configuration?

Back

Magnesium achieves an octet configuration by losing two electrons, forming a Mg²⁺ ion.

Front

What is the charge of a sulfate ion?

Back

The sulfate ion (SO₄) has a charge of -2.

Front

What is the significance of the octet rule in ionic bonding?

Back

The octet rule explains why atoms form ionic bonds: they transfer electrons to achieve full outer shells, resulting in stable compounds.

Front

What is the electron configuration of a sodium ion (Na⁺)?

Back

The electron configuration of Na⁺ is 1s² 2s² 2p⁶, which is the same as neon.