Bohr Models

Front

What is a valence electron?

Back

Electrons in the outermost energy level of an atom.

Front

What is the maximum number of electrons that can be placed on the 3rd energy level/ring?

Back

8 or 18 electrons.

Front

What is the atomic number of an atom?

Back

The number of protons in the nucleus of an atom.

Front

What is the mass number of an atom?

Back

The total number of protons and neutrons in the nucleus.

Front

How many valence electrons does an atom with atomic number 6 have?

Back

4 valence electrons.

Front

What is the Bohr model?

Back

A model of the atom that depicts electrons orbiting the nucleus in defined energy levels.

Front

What does the first energy level of an atom hold?

Back

A maximum of 2 electrons.

Front

How do you determine the number of protons in an atom?

Back

By looking at the atomic number.

Front

What is the relationship between atomic number and element identity?

Back

The atomic number uniquely identifies an element.

Front

What is the significance of the outermost energy level?

Back

It determines the chemical properties and reactivity of an element.