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Atomic Structure

Total questions: 24

Worksheet time: 12mins

Name
Class
Date
1.

Region of high probability of finding an electron

a)

atomic radius

b)

orbit

c)

atomic orbital

d)

ground state

2.

The quantum number 'n' represents ...

a)

electron spin

b)

orbital shape

c)

orbital orientation

d)

energy level

3.

What is the shape of p orbitals?

a)

Spherical shaped

b)

Clover-leaf shaped

c)

Dumbbell shaped

4.

How many electrons can EACH orbital hold?

a)

2

b)

6

c)

4

d)

8

5.

What is the maximum number of electrons can p orbitals hold?

a)

2

b)

6

c)

10

d)

14

6.

How many atomic orbitals are there in the d subshell?

a)

3

b)

1

c)

5

d)

7

7.

Which of the following are the possible value of l, when n =2 (hint: more than one answer)

a)

l = 3

b)

l = 0

c)

l = 2

d)

l = 1

8.

Which of the following are the possible values of m when l = 2 (hint : more than one answer)

a)

m = 0

b)

m = -3

c)

m = -2

d)

m = +1

9.

Which of the following sets of quantum numbers are possible?

a)

n=4, l=-1, m =-1, s= +1

b)

n=3, l=2, m=-1, s=+1/2

c)

n=2, l=2, m=-3, s=-1/2

10.

How many 4d orbitals are there in an atom?

a)

1

b)

3

c)

5

11.

Which orbitals cannot exist

a)

3p

b)

4d

c)

3f

d)

6s

12.

Write a set of quantum numbers for a 4d orbital.

a)

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

b)

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

c)

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

13.

Which set of Quantum numbers is not allowed

a)

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

b)

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

c)

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

14.

Identify the subshell in which electrons with the following quantum numbers are found:

n = 3, l = 2

a)

3s

b)

3p

c)

3d

15.

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

a)

2

b)

3

c)

4

16.

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

a)

2

b)

4

c)

6

d)

10

17.

The number of electrons with n=4, l=1 is

a)

2

b)

4

c)

6

d)

10

18.

How many electrons can occupy any single subshell orbital?

a)

1

b)

2

c)

6

d)

10

19.
An electron occupies the lowest energy orbital that can receive it.
a)
Hund’s rule
b)
Pauli exclusion principle
c)
Bohr model of the atom
d)
Aufbau principle
20.
All orbitals of equal energy are occupied by one electron before any single orbital is occupied by a second electron.
a)
Aufbau principle
b)
Pauli exclusion principle
c)
Hund’s rule
d)
Core Notation
21.
No two electrons in the same atom can have the same four quantum numbers.
a)
Aufbau principle
b)
Pauli exclusion principle
c)
Hund’s rule
d)
Noble gas notation
22.
Which guideline, Hund’s rule or the Pauli exclusion principle, is violated in the following orbital diagrams?
a)
Hund's
b)
Aufbau's
c)
Pauli's Exclusive
23.
Which guideline, Hund’s rule or the Pauli exclusion principle, is violated in the following orbital diagrams?
a)
Aufbau's
b)
Hund's
c)
Pauli exclusive
24.
How many electrons can an energy level of n = 2 hold?
a)
32
b)
24
c)
8
d)
6