Question 1a

Marks: 1

a)

An element Y has the following first six ionisation energies in kJ mol^-1. These are shown in the table below.

	1st	2nd	3rd	4th	5th	6th
Ionisation energy (kJ mol^-1)	577	1820	2740	11600	14800	18400

State what group of the Periodic Table this element belongs to.

[1]

Key Concepts

Deducing the Group

Question 1b

Marks: 1

b)

State what can be determined from the frequency of the convergence limit in a hydrogen emission spectrum.

[1]

Key Concepts

Convergence Limits on an Emission Spectrum

Question 1c

Marks: 1

c)

Hydrogen spectral data give the frequency of 3.30 x 10¹⁵ Hz for its convergence limit.

Calculate the ionisation energy, in J, for a single atom of hydrogen using Sections 1 and 2 of the Data Booklet.

[1]

Key Concepts

Calculating First Ionisation Energy

Question 1d

Marks: 1

d)

Calculate the wavelength, in m, for the electron transition corresponding to the frequency in part (c) using Section 1 of the Data Booklet.

Key Concepts

Calculating First Ionisation Energy

Question 2a

Marks: 1

a)

State which element in Period 2 will have the highest first ionisation energy value.

[1]

Key Concepts

Trends Across a Period

Question 2b

Marks: 1

b)

Write an equation, including state symbols, for the third ionisation energy of beryllium.

Key Concepts

Successive Ionisation Energies

Question 2c

Marks: 1

c)

The successive ionisation energies of an element, X, are shown below.

State how many shells element X has.

[1]

Key Concepts

Successive Ionisation Energies

Question 2d

Marks: 1

d)

Deduce which group element X is in.

[1]

Key Concepts

Deducing the Group

Question 3a

Marks: 1

a)

State the general trend in first ionisation energies across Period 3.

[1]

Key Concepts

Trends Across a Period

Question 3b

Marks: 2

b)

The first ionisation energy of aluminium is lower than magnesium. Write the full electron configurations of aluminium and magnesium.

[2]

Key Concepts

Electron Configurations: Explained

Question 3c

Marks: 2

c)

Using the electron configurations from part (b), explain why the first ionisation energy of aluminium is lower than magnesium.

[2]

Key Concepts

Trends Across a Period

Question 3d

Marks: 1

d)

Write the equation, including state symbols, for the second ionisation energy of aluminium.

[1]

Key Concepts

Successive Ionisation Energies

DP IB Chemistry: HL

Topic Questions

12.1 Electrons in Atoms

Question 1a

Key Concepts

Question 1b

Key Concepts

Question 1c

Key Concepts

Question 1d

Key Concepts

Question 2a

Key Concepts

Question 2b

Key Concepts

Question 2c

Key Concepts

Question 2d

Key Concepts

Question 3a

Key Concepts

Question 3b

Key Concepts

Question 3c

Key Concepts

Question 3d

Key Concepts

Resources

Members

Company

Quick Links