Flashcard #1: Atomic Structure

Front

What is the term used for regions of space where electrons are found in an atom?

Back

Orbitals

Front

How many valence electrons does Aluminum have?

Back

3

Front

What is the atomic number of an atom with 4 protons?

Back

4

Front

What did Niels Bohr discover about electrons?

Back

Electrons orbit the nucleus.

Front

Fill in the blank: The attractive force between the (+) nucleus and (–) electron cloud is what holds the atom ________.

Back

together.

Front

What are the three subatomic particles in an atom?

Back

Protons, Neutrons, Electrons.

Front

What is the charge of a proton?

Back

Positive.

Front

What is the charge of a neutron?

Back

Neutral.

Front

What is the charge of an electron?

Back

Negative.

Front

What is the nucleus of an atom composed of?

Back

Protons and Neutrons.