The Periodic Table

Front

What is the atomic number of an element?

Back

The atomic number is the number of protons in the nucleus of an atom, which also equals the number of electrons in a neutral atom.

Front

How many electrons are in a Neon atom?

Back

A Neon atom has 10 electrons.

Front

What does the atomic number tell us about an element?

Back

The atomic number tells us the number of protons and electrons in an atom.

Front

How many neutrons are in an atom of Potassium?

Back

An atom of Potassium has 20 neutrons.

Front

How many protons are in an atom of Potassium?

Back

An atom of Potassium has 19 protons.

Front

How many protons are in a Carbon atom?

Back

A Carbon atom has 6 protons.

Front

What is the significance of the periodic table?

Back

The periodic table organizes elements based on their atomic number, electron configurations, and recurring chemical properties.

Front

What is an element's atomic mass?

Back

The atomic mass is the weighted average mass of an element's isotopes, measured in atomic mass units (amu).

Front

What are isotopes?

Back

Isotopes are variants of a particular chemical element that have the same number of protons but different numbers of neutrons.

Front

What is the difference between protons, neutrons, and electrons?

Back

Protons are positively charged particles in the nucleus, neutrons are neutral particles in the nucleus, and electrons are negatively charged particles that orbit the nucleus.