2. Atoms & Elements

Which of the following elements typically forms cations?

Which of the following best explains why an anion has a negative charge?

When chlorine forms an ion, how many electrons does it gain or lose?

Which of the following elements is most likely to form a cation by losing two electrons?

Before an atom becomes an ion, what is its overall electric charge?

Which type of ionic imbalance is most likely illustrated by the cell labeled 2?

If a nitrogen atom (N) gains two electrons, which of the following elements would it be isoelectronic with?

Which of the following elements is most likely to form a cation?

Which ion could bond with a calcium ion (Ca^{2+}) to form a neutral ionic compound?

How many electrons are present in a Br⁻ ion?

Why does a sodium atom become a positively charged ion when it loses one electron?

What is the charge of a chloride ion?

How many electrons does a chlorine atom gain to achieve a stable electron configuration?

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⁻)?