U3L2 - Post Quiz - Quantum Theory and the Atom

The lowest allowable energy state of an atom is called its ______state

• excited

• ground

• stable

• lower

Each circular orbit where electrons were allowed was given a number, called the _______number.

• photon

• position

• level

• quantum

According to Bohr's model, the electron in a hydrogen atom moves around the nucleus ______.

• in circular orbits of only certain, allowed energy states

• in non-circular orbits of seven possible energy states

• in circular orbits of variable and continuous energy states

• in circular orbits of three possible energy states

According to the de Broglie equation, the ___________ of a particle is equal to Planck's constant divided by the particle's mass and its frequency.

Tags

NGSS.HS-PS4-1

The de Broglie equation predicts that all moving particles have ______.

• circular orbits

• wave characteristics

• measurable mass

• observable wavelengths

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-3

Which is the term for the three-dimensional region around the nucleus that describes the electron's probable location as predicted by the Schrödinger wave equation?

• probability function

• atomic orbit

• atomic orbital

• energy level

The atomic model in which electrons are treated as waves is called the _______ __________ model of the atom.

Which type of orbital is shown here?

• s

• d

• f

• p

It is impossible to know precisely both the velocity and the position of a particle at the same time, according to which of these?

• the general theory of relativity

• the Heisenberg uncertainty principle

• kinetic molecular theory

• the de Broglie equation

Niels Bohr's quantum model of the atom seemed to explain why ______ ________ _______ of elements are discontinuous.

Tags

NGSS.HS-PS4-3