2. Atoms & Elements

Which of the following ions is a cation?

If an atom of hydrogen gives up one electron, what ion is formed?

Do positive ions (cations) tend to be formed by metals or nonmetals?

What is the charge on the iron ion in Fe_2S_3?

What is the charge of an oxide ion formed when oxygen gains two electrons?

Which noble gas has the same electron configuration as the ion Cl^-?

Which of the following best describes a cation?

Which process leads to the formation of a cation?

Which of the following ions would be colored in aqueous solution?

If calcium ions, each of which has a charge of 2+, are present in a solution, what is the chemical symbol for a calcium ion?

In which of the following sets do all species have the same number of electrons

Which of the following best describes a cation?

Which describes an atom that has fewer neutrons than protons and more electrons than protons?

What charge will chlorine have when it gains one electron?