Quantum Theory

What is the principal quantum number (n)?

• A negative integer representing the energy level or shell of atomic orbitals.

• A positive integer representing the energy level or shell of atomic orbitals.

• A decimal number representing the energy level or size of atomic orbitals.

• A letter representing the energy level or shell of atomic orbitals.

What does the quantum mechanical model describe about electrons?

• Electrons do not exist in energy levels or orbitals.

• Electrons are not affected by the nucleus of an atom.

• Electrons exist in specific energy levels or orbitals and treated as waves

• Electrons are not present in atoms.

Tags

NGSS.HS-PS4-3

Predicts that all moving particles have wave characteristics and relate each particles wavelength to it's frequency, it's mass, and Planck's constant?

• de Broglie Equation

• Principle Energy Level

• Heisenberg Uncertainty Principle

• Quantum Mechanical Model

Tags

NGSS.HS-PS4-1

The __________________is contained within a _________________________.

• energy sublevel; principal energy level

• energy sublevel; atomic orbital

• principal energy level; energy sublevel

• quantum energy level; nucleus

What do we call the three-dimensional region around a nucleus where an electron will most likely be found?

• orbit

• circle

• orbital

• nucleus

Who proposed that the electrons could also have wavelike properties?

• Bohr

• Heisenberg

• de Broglie

• Einstein

Tags

NGSS.HS-PS4-3

The set of orbitals that are dumbbell shaped and directed along the x, y, and z axes are called 

• d orbitals.

• p orbitals.

• f orbitals.

• s orbitals

A line spectrum is produced when an electron moves from one energy level

• into the nucleus.

• to another position in the same sublevel.

• to a higher energy level.

• to a lower energy level.

Tags

NGSS.HS-PS4-3

According to the Bohr model of the atom, the single electron of a hydrogen atom circles the nucleus

• in specific, allowed orbits.

• in one fixed orbit at all times.

• at any of an infinite number of distances, depending on its energy.

• counterclockwise.

Which statement is NOT true about Bohr's Atomic Model?

• The electrons in an atom move in circular patterns

• The smaller the orbit, the lower the atomic energy is

• Bohr assigned a quantum number (n) to each energy level.

• The larger the orbit, the lower the atomic energy is.