Bohr Models and Lewis Structures

Front

What is the atomic number of an element?

Back

The atomic number is the number of protons in the nucleus of an atom, which determines the element's identity.

Front

What is the significance of valence electrons?

Back

Valence electrons are the outermost electrons of an atom and are important for determining how an element will react chemically.

Front

How many valence electrons does an Argon atom have?

Back

Argon has 8 valence electrons.

Front

What is a Bohr model?

Back

A Bohr model is a diagram that represents an atom with a nucleus surrounded by electrons in specific energy levels.

Front

What does a Lewis structure represent?

Back

A Lewis structure represents the bonding between atoms in a molecule and the lone pairs of electrons that may exist.

Front

How do you determine the mass number of an element?

Back

The mass number is determined by adding the number of protons and neutrons in the nucleus.

Front

What is the mass number of an Oxygen atom?

Back

The mass number of Oxygen is typically 16, which is the sum of its 8 protons and 8 neutrons.

Front

What is the electron configuration of Fluorine?

Back

The electron configuration of Fluorine is 1s² 2s² 2p⁵.

Front

What is the difference between atomic mass and mass number?

Back

Atomic mass is the weighted average mass of an element's isotopes, while mass number is the total number of protons and neutrons in a specific isotope.

Front

What is a dot diagram?

Back

A dot diagram, or Lewis dot structure, shows the valence electrons of an atom as dots around the element's symbol.