Free Printable Chapter 2 Atomic Structure

1.

Ground state of an atom is always equal to 0

a)

True

b)

False

2.

Calculate the energy of electron at n=6

a)

6.055 x 10^-20 J

b)

5.655 x10^-20 J

c)

-6.055 x10^-20 J

d)

1.320 x10^-20 J

3.

Which of the following line is correct when electron undergoes transition from excited state n= 7 to ground state n= 1 in Lyman Series

a)

5th line

b)

4th line

c)

6th line

d)

7th line

4.

Give the value of Planck's constant.

a)

$6.63\times10^{-34}\ Js\ @\ Kg\ m^{-2}\ s^{-1}$

b)

$3.0\ \times\ 10^8ms^{-1}$

c)

$1.097\ \times10^7m^{-1}$

d)

$2.18\ \times10^{-18}J$

5.

n=4, l=3?

a)

4f

b)

4d

c)

3s

d)

3p

6.

For L = 1, tick the possible values of m:

a)

-2

b)

-1

c)

0

d)

1

e)

2

7.

2. A quantum number determining orbital orientation around the atom’s core is called... .

a)

n

b)

l

c)

m

d)

s

8.

What are the possible values of s?

a)

-1

b)

-1/2

c)

0

d)

1/2

e)

1

9.

Within an energy level, which orbitals are the lowest in energy?

a)

s

b)

f

c)

d

d)

p

10.

What is the Aufbau principle?

a)

Within an energy level, s orbitals are the lowest energy, followed by p, d and then f. F orbitals are the highest energy for that level.

b)

The lower the principal quantum number (n) the lower the energy.

c)

All three.

d)

The Aufbau Principle states that electrons enter the lowest energy orbitals first.

11.

Identify the rule that is being violated

a)

Aufbau principle

b)

Hund's rule

c)

Pauli Exclusion principle

d)

Heisenberg uncertainty principle

12.

What is incorrect about this orbital diagram?

a)

Both arrows in the filled 2p box should be pointing the same direction

b)

There is nothing incorrect with this diagram

c)

In the there should only be 1 arrow in the first 2p box and one in the 2nd 2p box

d)

All the arrows should be pointing the same direction.

Chapter 2 Atomic Structure

Total questions: 12

Worksheet time: 6mins

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