Periodic Table Basics

Front

The inner region of an atom is called ______.

Back

Nucleus

Front

Rows in the Periodic Table are called ______.

Back

Periods

Front

______ is located in period 2.

Back

Carbon

Front

______ is located in group 18.

Back

Neon

Front

______ has 3 protons.

Back

Lithium

Front

The outer region of an atom where electrons are found is called ______.

Back

Electron Cloud

Front

Elements in the same column of the Periodic Table are called ______.

Back

Groups

Front

The atomic number of an element represents the number of ______ in its nucleus.

Back

Protons

Front

The Periodic Table is organized by increasing ______.

Back

Atomic Number

Front

The element with the symbol 'He' is ______.

Back

Helium