Practice Quantum Numbers Multiple Choice Questions with Answers Quiz-2

Q.1.

The principle quantum number, n, represents the:

spin value
suborbital value
energy level
magnetic value

Q.2.

Orbital sublevels, or L, represents:

orbital color
orbital shape
electron spin
energy level

Q.3.

For a p sublevel, "L" equals ____.

0
1
2
3

Q.4.

What is the correct representation for an orbital which has an "n" value of 4 and an "L" value of 2?

4d
4s
4f
4p

Q.5.

Which of the following sets of quantum numbers (n, l, ml, and ms) describes the valence electron of Na?

2, 1, 0, -½
2, 0, 0, -½
3, 1, 1, +½
3, 0, 0, +½

Q.6.

Electrons that have not been excited are said to be at:

high level
base line
set state
ground state

Q.7.

There may be a maximum of ____ p orbitals at a given energy level.

2
6
3
8

Q.8.

Which orbitals cannot exist

3p
4d
3f
6s

Q.9.

The difference between an orbit and an orbital is:

an orbit is a set path, but an orbital has no dimension
an orbital is a set path, but an orbit cannot be defined
an orbit is a set path, but an orbital is a 3-dimensional region in which electrons may be found with high probability
there is no difference when it comes to electron configurations

Q.10.

The spin of an electron is represented by this variable:

n
l
m
s

Q.11.

How many valence electrons are in an atom of sulfur?

2
4
6
8

Q.12.

Which of the following quantum number sets is not allowed?

{ 3, 2, +1, -1/2 }
{ 5, 3, -1, +1/2 }
{ 12, 1, +2, +1/2 }
{ 7, 6, -5, -1/2 }

Q.13.

According to the Aufbau Principle, which sublevel should starting filling with electrons after 5s?

6s
5p
4d
3f

Q.14.

How many orbitals are available to hold electrons in the 4th energy level (n=4)?

4
8
16
32

Q.15.

The maximum number of electrons with quantum numbers with n=3 and l=2 is

2
4
6
10

Q.16.

How many orbitals (including sub orbitals) are found in a shell with n = 2?

2
3
4

Q.17.

Identify the subshell in which electrons with the following quantum numbers are found:n =l = 2

3s
3p
3d

Q.18.

Which set of Quantum numbers is not allowed

(3,1,1,-1/2)
(2,1,-2,+1/2)
(4,2,-1,-1/2)

Q.19.

Write a set of quantum numbers for aorbital.

(4,1,0, -1/2)
(4,2,-2, +1/2)
(4,0,2,-1/2)

Q.20.

How manyorbitals are there in an atom?

1
3
5

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