Periodic Table Review

Front

How many valence electrons does chlorine have?

Back

Chlorine has 7 valence electrons.

Front

What is the number of electrons in a Au²⁺ ion?

Back

A Au²⁺ ion has 77 electrons.

Front

Compared to protons, electrons are:

Back

Electrons are much lighter than protons.

Front

Chlorine could be identified as a/an _____________.

Back

Chlorine is a halogen.

Front

What is the atomic number of chlorine?

Back

The atomic number of chlorine is 17.

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 the main component of the nucleus of an atom?

Back

The nucleus is mainly composed of protons and neutrons.

Front

What is the difference between an atom and an ion?

Back

An atom is neutral, while an ion has a charge due to the loss or gain of electrons.

Front

What are the three main types of elements on the periodic table?

Back

The three main types are metals, nonmetals, and metalloids.