Periodic Table Basics

Front

What does the atomic number represent in an element?

Back

The atomic number represents the number of protons in the nucleus of an atom, and in a neutral atom, it also equals the number of electrons.

Front

What is the atomic number of oxygen?

Back

8

Front

What is the atomic number of Neon?

Back

10

Front

Which element is in PERIOD 2 of the periodic table?

Back

Beryllium

Front

How is atomic mass calculated?

Back

Atomic mass is the sum of the number of protons and neutrons in an atom.

Front

What is the charge of a proton?

Back

A proton has a positive charge.

Front

What is the charge of an electron?

Back

An electron has a negative charge.

Front

What is a neutron?

Back

A neutron is a subatomic particle found in the nucleus of an atom that has no charge.

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 are groups in the periodic table?

Back

Groups are vertical columns in the periodic table that contain elements with similar chemical properties.