2. Atoms & Elements

Which of the following best describes the formation of a cation?

Which of the following ions is a cation?

Why do atoms form ions?

Which of the following statements about ions is true?

Which of the following correctly identifies the cation and anion present in the compound CrO2?

Which of the following ions does NOT have a noble gas electron configuration in its ground state?

Which set of properties correctly describes a bromine-79 atom with a -1 charge?

What is the net charge of an ion that consists of 10 electrons and 9 protons?

What is the typical charge of sodium ions (Na) when present in a salt compound?

Which type of electrical charge is carried by cations?

Which of the following statements is true concerning calcium ions?

If an atom has a charge of 2+, what does this indicate about the atom?

Which of the following statements is NOT true about the Sc^{3+} ion?

When an atom loses a negatively-charged electron, it becomes a(n):

What is the most stable monatomic ion formed from lithium?