Ions and Valence Electrons

Front

What is an ion?

Back

An ion is an atom or molecule that has a net electrical charge due to the loss or gain of one or more electrons.

Front

What is the difference between cations and anions?

Back

Cations are positively charged ions that result from the loss of electrons, while anions are negatively charged ions that result from the gain of electrons.

Front

How do you determine the charge of an ion?

Back

The charge of an ion can be determined by subtracting the number of electrons from the number of protons. If protons > electrons, the ion is positive (cation); if electrons > protons, the ion is negative (anion).

Front

What is the ion symbol for an ion with 29 protons and 28 electrons?

Back

Cu+1, Cu1+, or Cu+.

Front

What is the ion symbol for an ion with 9 protons and 10 electrons?

Back

F-1, F1-, or F-.

Front

What is the ion symbol for an ion with 12 protons and 10 electrons?

Back

Mg+2 or Mg2+.

Front

What is the ion symbol for an ion with 15 protons and 18 electrons?

Back

P-3 or P3-.

Front

What is the significance of valence electrons in ion formation?

Back

Valence electrons are the outermost electrons of an atom and are involved in chemical bonding and ion formation. Atoms tend to lose, gain, or share valence electrons to achieve a full outer shell.

Front

How many valence electrons does a neutral atom of magnesium have?

Back

A neutral atom of magnesium has 2 valence 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 8 electrons, which is considered stable.