Review - Periodic Table & Atomic Structure

Front

What is the name of the group that never reacts and is stable with a full outermost ring?

Back

Noble gases

Front

How many valence electrons does Iodine have?

Back

7

Front

What is the basic structural unit of matter?

Back

Atom

Front

Who developed the first periodic table in 1869, organizing elements according to atomic weight?

Back

Dmitri Mendeleev

Front

At room temperature, metals are ____________.

Back

Solid

Front

What is the atomic number of an element?

Back

The number of protons in the nucleus of an atom.

Front

What are the three main subatomic particles?

Back

Protons, neutrons, and electrons.

Front

What is the charge of a proton?

Back

Positive (+1)

Front

What is the charge of an electron?

Back

Negative (-1)

Front

What is the charge of a neutron?

Back

Neutral (0)