What is a negative ion? A. An atom that contains more electrons than neutrons B. An atom that contains more protons than neutrons C. An atom that contains more electrons than protons D. An atom that contains more protons than electrons E. None of the above

The correct answer is C. An atom that contains more electrons than protons.

An atom is made up of three types of subatomic particles: protons, neutrons, and electrons. Protons and neutrons are located in the nucleus of the atom, while electrons orbit the nucleus. The number of protons in an atom determines its chemical element. For example, all atoms with one proton in their nucleus are hydrogen atoms, all atoms with two protons are helium atoms, and so on.

The number of electrons in an atom is equal to the number of protons in the nucleus. This is because

atoms are electrically neutral, meaning that they have an equal number of positive and negative charges. However, atoms can gain or lose electrons, which changes their electrical charge. An atom that has gained one or more electrons is called a negative ion. A negative ion has a negative charge because it has more electrons than protons.

Positive ions are formed when atoms lose electrons. A positive ion has a positive charge because it has more protons than electrons.

Neutral atoms are formed when atoms have an equal number of protons and electrons.

I hope this helps!