Question 1

Marks: 1

Which of the following statements describes first ionisation energy?

The energy required to remove one mole of electrons from one mole of gaseous atoms
The energy required to remove the outermost electron from each atom in one mole of gaseous atoms
The energy required to remove the outermost electron from each atom in one mole of atoms
The energy required to produce one mole of ions from one mole of gaseous atoms

Question 2

Marks: 1

A periodic table is needed for this question

Sodium sulfide, Na₂S, is a reactive yellow solid, produced when sodium and sulfur react together.

How do the ionic radius and atomic radius of sodium compare with those of sulfur?

	ionic radius	atomic radius
A	sodium < sulfur	sodium < sulfur
B	sodium < sulfur	sodium > sulfur
C	sodium > sulfur	sodium > sulfur
D	sodium > sulfur	sodium < sulfur

Question 3

Marks: 1

Which property below decreases generally across the second period?

Atomic number
Atomic radius
Electronegativity
Ionisation energy

Question 4

Marks: 1

The trends in three physical properties of the elements of period 3 are shown in the graphs

q4_3-1_periodic-table--periodic-trends-ib_sl_easy

Which physical property is not illustrated?

Electrical conductivity
Atomic radius
Melting point
First ionisation energy

Question 5

Marks: 1

Silicon reacts with chlorine gas to produce silicon chloride.

How many moles of chlorine gas are needed to react with 1 mole of silicon?

2
3
4
5

Question 6

Marks: 1

This question refers to isolated gaseous species.

The species O^2-, Ne and Mg²⁺are isoelectronic.

In which order do their radii increase?

	Smallest	$\overset{}{\to}$	Largest
A	Mg²⁺	O^2-	Ne
B	Ne	O^2-	Mg²⁺
C	Mg²⁺	Ne	O^2-
D	O^2-	Ne	Mg²⁺

Question 7

Marks: 1

Use of the periodic table is relevant to this question.

Which graph correctly shows the electronegativity of the elements Na, Mg, Al and Si, from period 3, plotted against their first ionisation energies?

N_bcASI0_q7_3-1_periodic-table--periodic-trends_ib_sl_easy

Question 8

Marks: 1

Which period 3 element from sodium to silicon, has the largest atomic radius?

Magnesium
Sodium
Silicon
Aluminium

Question 9

Marks: 1

What is the correct classification for the element zirconium, Zr?

s block
d block
f block
p block

Question 10

Marks: 1

Why is the first ionisation energy of magnesium higher than the second ionisation energy?

Less shielding
Ionic radius increases
Nuclear charge is increasing
Greater attraction between positive nucleus and outer electron

DP IB Chemistry: SL

Topic Questions

3.1 The Periodic Table & Periodic Trends

Question 1

Question 2

Question 3

Question 4

Question 5

Question 6

Question 7

Question 8

Question 9

Question 10

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