Question

Which of the following statements is true?

1. quantum numbers n, l, and ml denote the size, shape, and orientation, respectively, of each atomic orbital

2. the Pauli Exclusion Principle states that no two electrons in neighboring atoms can have the same set of four quantum numbers

3. according to Bohr's model of the atom, an atomic spectrum consists of separate lines because an atom has certain allowable orientations in space

4.the Heisenberg Uncertainty Principle states that it is impossible to determine accurately both the momentum and the energy of a particle simultaneously

Answer #1

**Ans:-** Option (1) *i.e "quantum numbers n, l,
and m denote the size, shape, and orientation, respectively, of
each atomic orbital" is the correct answer.*

**Explanation :-** n = Principal quantum number
which gives the size of the atomic orbital.

l = Azimuthal orbital quantum number which gives the shape of the atomic orbital and

m = Magnetic quantum number which gives the orientation of atomic orbitals.

**option (2)** is incorrect because "The Pauli
Exclusion Principle states that no two electrons **in an
orbital** can have the same set of four quantum
numbers".

**option (3)** is incorrect .

**option (4)** is incorrect because " the
Heisenberg Uncertainty Principle states that it is impossible to
determine accurately both the **momentum and the
position** of a moving microscopic particle
simultaneously.

Suppose two electrons in an atom have quantum numbers n = 5 and
L = 4.
(a) How many states are possible for those two electrons? (Keep
in mind that the electrons are indistinguishable.)
(b) If the Pauli exclusion did not apply to the electrons, how
many states would be possible?

why are the electrons of the helium atom not all in the 1s
state.
Which of the following
choices best explains this observation?
Coulomb's law
the Pauli exclusion principle
the Einstein quantum entanglement principle
Rutherford's explanation of atomic structure
the Heisenberg uncertainty principle
2.)There is a singly-ionized helium atom, which has 2 protons
with its remaining electron in the ground state.
Using the Bohr model calculation, determine the maximum
wavelength in nanometers for a photon that could remove the
remaining...

Which of the following statements about quantum numbers are
true? (Choose "True" or "False" for each statement.)
True/False Quantum numbers describe the number of
protons and neutrons in an atom.
True/False The ms quantum number has
just 2 allowed values.
True/False The labels on atomic orbitals (1s, 2p, etc.)
are based on quantum numbers.
True/False n, l,
ml, and ms are quantum
numbers.
True/False It takes three quantum numbers to specify an
atomic orbital.

Learning Outcomes (Unit 2)
Perform quantitative calculations based on the relationship
between wavelength, energy, and the speed of light.
Identify and rank the different types of radiation which
comprise the electromagnetic spectrum.
Explain why classical mechanics doesn't describe electromagnetic
radiation.
Describe the photoelectric effect and relate the energy and/or
intensity of the photons to the work function and kinetic energy of
the ejected electrons.
Explain the origin of atomic and emission spectra and relate
these spectra to discrete energy levels....

a) Which one of the following statements was assumed by Bohr in
developing his atomic theory?
-A) Photons have momentum
-B) There are stationary states in which the electron does not
radiate energy
-C) Emission line spectra are a result of photons jumping from
lower to higher energy levels
b) When observing an absorption line spectrum of a cool gas,
some electrons in the atoms of the gas are believed to:
-A)Move from higher to lower energy level
-B)Move from...

1) The Pauli Exclusion Principle tells us that
no two electrons in an atom can have the same four quantum
numbers.
Enter ONE possible value for each quantum number of an electron
in the orbital given.
Orbital
n
l
ml
ms
1s
There are a total of values possible for
ml.
2s
There are a total of values possible for
ml.
2) The Pauli Exclusion Principle tells us that
no two electrons in an atom can have the same four...

Answer all the following multiple choices with the right
answer.
Question 1
Which object(s) would you use to describe the shape of the
2p orbital?
Question 1 options:
a)
a circle
b)
a sphere
c)
a dumb-bell
d)
two perpendicular dumb-bells
e)
a doughnut
Question 2
Which situation must be true for two electrons to occupy the
same orbital?
Question 2 options:
a)
The electrons must have low energy.
b)
The electrons must have identical sets of quantum numbers.
c)...

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 52 minutes ago

asked 56 minutes ago

asked 58 minutes ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 2 hours ago

asked 2 hours ago

asked 2 hours ago