Chem 511 Unit 3 Review: Atomic Structure

Front

What is the Bohr Model?

Back

The Bohr Model is a representation of the atom that depicts electrons orbiting the nucleus in defined paths or energy levels.

Front

Which element has 3 valence electrons?

Back

Elements in Group IIIA (3A) of the periodic table, such as Aluminum, have 3 valence electrons.

Front

What is the atomic mass of Nitrogen?

Back

The average atomic mass of Nitrogen is approximately 14.007 amu.

Front

How many protons does a Lithium atom have?

Back

A Lithium atom has 3 protons.

Front

What is a valence electron?

Back

Valence electrons are the electrons in the outermost shell of an atom that are involved in forming bonds.

Front

How many valence electrons does a Carbon atom have?

Back

A Carbon atom has 4 valence electrons.

Front

What is an isotope?

Back

Isotopes are variants of a particular chemical element that have the same number of protons but different numbers of neutrons.

Front

What is the significance of the atomic number?

Back

The atomic number indicates the number of protons in an atom and determines the element's identity.

Front

What does the term 'group' refer to in the periodic table?

Back

A group refers to a column in the periodic table where elements share similar chemical properties and have the same number of valence electrons.

Front

What is the electron configuration of Oxygen?

Back

The electron configuration of Oxygen is 1s² 2s² 2p⁴.