2. Atoms & Elements

What is the charge on a sulfide ion formed when sulfur gains electrons to achieve a stable electron configuration?

How many electrons must a neutral chlorine atom gain or lose to become a chloride ion (Cl⁻)?

What is the net charge of an ion that has 11 protons and 10 electrons?

Which of the following is NOT a cation?

Which of the following would be a negative ion with a single charge?

What occurs when a sodium ion (Na+) is attracted to a chloride ion (Cl-)?

What is the charge of a sodium ion (Na^+)?

Which of the following is the correct ionic symbol for an ion with 34 protons and 36 electrons?

Which of the following best describes cations?

Aluminum is a Group 3A metal. Which ion does Al typically form?

Which of the following elements does not typically form a monatomic ion?

What is the oxidation state (charge) of chromium in the complex ion [Cr(NH3)3Br3]?

Which ions are formed when CH₃OH (methanol) dissociates in water?

How many electrons does an oxygen atom need to gain in order to achieve a stable, noble gas electron configuration?

Which of the following ions is isoelectronic with the oxide anion O^{2-}?