Quantum Physics

question

According to the Quantum Mechanics model of the atom, the electron is…
answer

A 3-dimensional wave surrounding the nucleus of an atom. The electrons are in fixed energy states and can move about the nucleus without radiating away their energy.
question

Principle Quantum Number (n)
answer

Indicates the average distance that an electron is located from the nucleus of the atom.
question

What is the maximum number of electrons possible in any given energy level where n=the energy level equal to?
answer

2n^2
question

Orbital Quantum Number (l)
answer

Indiactes the shape of the path in which electrons move. These paths are called sublevels.
question

Where are electrons placed in a given energy sublevel?
answer

The lowest energy sublevel first.
question

Magnetic Quantum Number (ml)
answer

Indicates the direction and space of the path of a pair of electrons. This direction is called an orbital.
question

Orbital
answer

A three-dimensional space about the nucleus in which electrons of a given energy are likely to be found.
question

The maximum number of orbitals in a given energy level is equal to…
answer

n^2
question

Spin Quantum Number (ms)
answer

Indicates the spin or rotation of the electron on its axis.
question

Pauli’s Exculsion Principle
answer

States that no more than two electrons can occupy the same orbital in an atom and these two electrons must have opposite spins.
question

Electron Pair
answer

Two electrons in the same orbital with opposite spins.
question

Valence Electrons
answer

The electrons in the outermost energy level of the atom.
question

What is the most important part of the electron configuration? Explain.
answer

The valence electrons are the most important part of the electron configuration. The number and arrangement of the valence electrons determine the chemical properties of an element.
question

Kernel
answer

The entire electron configuration excluding the valence electrons.
question

Ground State
answer

The lowest energy state of an atom. The atom’s most stable state.
question

Spectroscopy
answer

The method of studying substances that are exposed to some sort of continous exciting energy.
question

What causes the bright light spectrum?
answer

If an outside force causes an electron to change orbitals, energy is either given off or absorbed by definate units called Quanta. This change produces the bright light spectrum of the substance.
question

What is true about spectrums of different substances?
answer

Each is unique.
question

What is found through studying the spectrum?
answer

The energy diagram for the location of the electrons.
question

Spectrum
answer

A unique set of wave-lengths absorbed by a substance.
question

Hund’s Rule
answer

When placing electrons in a sublevel that has more than one orbital, one electron of the same spin is placed in each orbital before doubling up.
question

Aufbau Principle
answer

Electrons are placed one at a time in the lowest energy position.

Get instant access to
all materials

Become a Member