Chemistry for Cambridge International AS & A Level Coursebook with Digital Access (2 Years)>Chapter 2 - Electrons in Atoms>EXAM-STYLE QUESTIONS>Q 1

MEDIUM

AS and A Level

IMPORTANT

Earn 100

Write an equation, including state symbols, to represent the $2^{nd}$ ionization energy aluminium.

Important Questions on Electrons in Atoms

HARD

AS and A Level

IMPORTANT

Chemistry for Cambridge International AS & A Level Coursebook with Digital Access (2 Years)>Chapter 2 - Electrons in Atoms>EXAM-STYLE QUESTIONS>Q 1

Write the electronic configuration of an aluminium ion

{Al}^{+ 3}

, using

1 s^{2}

notation.

MEDIUM

AS and A Level

IMPORTANT

Chemistry for Cambridge International AS & A Level Coursebook with Digital Access (2 Years)>Chapter 2 - Electrons in Atoms>EXAM-STYLE QUESTIONS>Q 2

The table shows the first ionization energies,

{IE}_{1}

,in

{KJmol}^{- 1}

, of the elements in the period

3

of the periodic table.

Element	Na	Mg	Al	Si	P	S	Cl	Ar
${IE}_{1}$	494	736	577	786	1060	1000	1260	1520

Explain why there is a general increase in the value of ${IE}_{1}$ across the period.

MEDIUM

AS and A Level

IMPORTANT

Chemistry for Cambridge International AS & A Level Coursebook with Digital Access (2 Years)>Chapter 2 - Electrons in Atoms>EXAM-STYLE QUESTIONS>Q 2

The table shows the first ionization energies,

{IE}_{1}

,in

{KJmol}^{- 1}

, of the elements in the period

3

of the periodic table.

Element	Na	Mg	Al	Si	P	S	Cl	Ar
${IE}_{1}$	494	736	577	786	1060	1000	1260	1520

Write the electronic configuration for argon $(Z = 18)$ using $1 s^{2}$ notation.

MEDIUM

AS and A Level

IMPORTANT

Chemistry for Cambridge International AS & A Level Coursebook with Digital Access (2 Years)>Chapter 2 - Electrons in Atoms>EXAM-STYLE QUESTIONS>Q 2

Copy and complete the diagram below for the

15

electrons in phosphorus by:
Adding labels for the other sub-shell.
Question Image

Question Image

MEDIUM

AS and A Level

IMPORTANT

Chemistry for Cambridge International AS & A Level Coursebook with Digital Access (2 Years)>Chapter 2 - Electrons in Atoms>EXAM-STYLE QUESTIONS>Q 2

Copy and complete the diagram below for the

15

electrons in phosphorus by:
Showing how the electrons are arranged.
Question Image

Question Image

MEDIUM

AS and A Level

IMPORTANT

Chemistry for Cambridge International AS & A Level Coursebook with Digital Access (2 Years)>Chapter 2 - Electrons in Atoms>EXAM-STYLE QUESTIONS>Q 2

Predict a value for the first ionization energy for potassium, which has one more proton than argon.

EASY

AS and A Level

IMPORTANT

Chemistry for Cambridge International AS & A Level Coursebook with Digital Access (2 Years)>Chapter 2 - Electrons in Atoms>EXAM-STYLE QUESTIONS>Q 3

Draw diagrams to show the shape of p-orbital.

MEDIUM

AS and A Level

IMPORTANT

Chemistry for Cambridge International AS & A Level Coursebook with Digital Access (2 Years)>Chapter 2 - Electrons in Atoms>EXAM-STYLE QUESTIONS>Q 3

Element

X

has the electronic configuration is

1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 3 d^{8} 4 s^{2}

. State which block in the periodic table

X

belongs to.