Atomic Structure

In a neutral atom, what is the relationship between protons and electrons?

• The number of protons is greater than the number of electrons.

• The number of protons is less than the number of electrons.

• In a neutral atom, the number of protons is equal to the number of electrons.

• The number of protons and electrons can vary independently.

What is the atomic number of an element?

• The number of neutrons in the nucleus of an atom.

• The number of protons in the nucleus of an atom, which determines the element's identity.

• The total number of electrons in an atom.

• The mass of an atom measured in atomic mass units.

What are neutrons?

• Subatomic particles found in the nucleus of an atom that have no charge (neutral).

• Particles that orbit the nucleus of an atom and have a positive charge.

• Particles that are found in the electron cloud and have a negative charge.

• The smallest unit of matter that retains the properties of an element.

What is the nucleus of an atom?

• The outer shell of an atom that contains electrons.

• The central part of an atom, containing protons and neutrons.

• A type of particle that orbits the nucleus.

• The energy level of an atom.

What is the mass number of an atom?

• The total number of electrons in an atom.

• The total number of protons and neutrons in the nucleus of an atom.

• The total number of protons in an atom.

• The total number of neutrons in an atom.

What are protons?

• Negatively charged particles found in the nucleus of an atom.

• Positively charged subatomic particles found in the nucleus of an atom.

• Neutral particles that orbit the nucleus of an atom.

• Particles that are found outside the nucleus of an atom.

What is the charge of electrons?

• Positive charge

• Neutral charge

• Negative charge

• Variable charge