Chemistry for Cambridge International AS & A Level Coursebook with Digital Access (2 Years)>Chapter 2 - Electrons in Atoms>EXAM-STYLE QUESTIONS>Q 8

MEDIUM

AS and A Level

IMPORTANT

Earn 100

Sketch a graph to show how $\log_{10}$ (Ionization energies for chlorine (atomic number $17$ ) varies when the plotted against number of electron removed.

Important Questions on Electrons in Atoms

MEDIUM

AS and A Level

IMPORTANT

Chemistry for Cambridge International AS & A Level Coursebook with Digital Access (2 Years)>Chapter 2 - Electrons in Atoms>Questions for discussion>Q •

Why must the inside of an electron microscope be at very low pressure so that there is hardly any air present ?

HARD

AS and A Level

IMPORTANT

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

For the element aluminium(

Z = 13

), Sketch a graph to predict the

\log_{10}

of the successive ionization energies (Y-axis) against the number of electrons removed (X-axis).

HARD

AS and A Level

IMPORTANT

Chemistry for Cambridge International AS & A Level Coursebook with Digital Access (2 Years)>Chapter 2 - Electrons in Atoms>Question>Q 4

Sketch a graph to show the

\log_{10}

values of the first four ionization energies of a group

2

element.

HARD

AS and A Level

IMPORTANT

Chemistry for Cambridge International AS & A Level Coursebook with Digital Access (2 Years)>Chapter 2 - Electrons in Atoms>Questions>Q 8

Which block in the periodic table does the element with the electronic configuration

1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 3 d^{5} 4 s^{1}

belong to ?

MEDIUM

AS and A Level

IMPORTANT

Chemistry for Cambridge International AS & A Level Coursebook with Digital Access (2 Years)>Chapter 2 - Electrons in Atoms>Questions>Q 12

The first ionization energies of four consecutive elements in the periodic table are :
Sodium =

494 {KJmol}^{- 1}

Magnesium=

736 {KJmol}^{- 1}

Aluminium =

577 {KJmol}^{- 1}

Silicon=

786 {KJmol}^{- 1}

Explain the general increase in ionisation energy from sodium to Silicon.

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 aluminium has a lower value of ${IE}_{1}$ than magnesium.

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

State the meaning of the term atomic 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 8

Explain the shape of the graph you have drawn for

\log_{10}

(ionization energy) for Chlorine varies when plotted against number of electron removed.