Atomic Structure

Front

What is the definition of a neutral atom?

Back

A neutral atom is an atom that has an equal number of protons and electrons, resulting in no overall charge.

Front

How many protons does an iodine atom have?

Back

Iodine has 53 protons.

Front

What is the relationship between protons and electrons in a neutral atom?

Back

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

Front

What is the atomic mass of Neon?

Back

The atomic mass of Neon is 20.18.

Front

How many electrons does a neutral potassium (K) atom contain?

Back

A neutral potassium atom contains 19 electrons.

Front

What are the three main subatomic particles?

Back

The three main subatomic particles are protons, neutrons, and electrons.

Front

Where are protons and neutrons located in an atom?

Back

Protons and neutrons are located in the nucleus of an atom.

Front

Which subatomic particle is NOT found in the nucleus of an atom?

Back

Electrons are not found in the nucleus; they orbit around it.

Front

What is the atomic mass unit (amu)?

Back

The atomic mass unit (amu) is a standard unit of mass that quantifies mass on an atomic or molecular scale, defined as one twelfth of the mass of a carbon-12 atom.

Front

How do you calculate the number of neutrons in an atom?

Back

To calculate the number of neutrons, subtract the atomic number (number of protons) from the atomic mass.