Atoms and Atomic Structure Review

Front

What are valence electrons?

Back

The number of electrons on the outermost orbital of an atom.

Front

How many valence electrons do halogens have?

Back

Halogens have 7 valence electrons.

Front

What happens to the number of valence electrons as you go down group 17 of the periodic table?

Back

The total number of valence electrons remains the same at 7.

Front

What is the maximum number of electrons that the first energy level can hold?

Back

The first energy level can hold up to 2 electrons.

Front

What is the average atomic mass of oxygen?

Back

The average atomic mass of oxygen is about 16 amu.

Front

What do elements in the same group of the periodic table have in common?

Back

They have the same number of valence electrons.

Front

What is the significance of valence electrons in chemical bonding?

Back

Valence electrons determine how an atom can bond with other atoms.

Front

What is the atomic structure of an atom?

Back

An atom consists of a nucleus containing protons and neutrons, surrounded by electrons in energy levels.

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.