MEDIUM
AS and A Level
IMPORTANT
Earn 100

Explain the shape of the graph you have drawn for log10 (ionization energy) for Chlorine varies when plotted against number of electron removed.

Important Questions on Electrons in Atoms

EASY
AS and A Level
IMPORTANT
Chemistry for Cambridge International AS & A Level Coursebook with Digital Access (2 Years)>Chapter 2 - Electrons in Atoms>BEFORE YOU START>Q 1
What are the relative mass and relative charges of proton and electron ?
MEDIUM
AS and A Level
IMPORTANT
Chemistry for Cambridge International AS & A Level Coursebook with Digital Access (2 Years)>Chapter 2 - Electrons in Atoms>BEFORE YOU START>Q 2
What is meant by the terms electron shell and electronic configuration ?
MEDIUM
AS and A Level
IMPORTANT
Chemistry for Cambridge International AS & A Level Coursebook with Digital Access (2 Years)>Chapter 2 - Electrons in Atoms>BEFORE YOU START>Q 2
Explain to another learner.
Why in terms of electronic configuration, the gases helium,neon and argon are relatively unreactive.
 
EASY
AS and A Level
IMPORTANT
Chemistry for Cambridge International AS & A Level Coursebook with Digital Access (2 Years)>Chapter 2 - Electrons in Atoms>BEFORE YOU START>Q 7
What prefixes do you know that can be placed before the basic unit and what is their relationship to the basic unit ? For example, a centimetre (cm) is one-hundredth of a metre (m). 
EASY
AS and A Level
IMPORTANT
Chemistry for Cambridge International AS & A Level Coursebook with Digital Access (2 Years)>Chapter 2 - Electrons in Atoms>BEFORE YOU START>Q 8
Practise writing units in standard form,e.g g/cm3becomes g cm-3(the negative 3 shows that the cm3 is the divisor).Try changing the following into the standard form: 
mol/dm3
EASY
AS and A Level
IMPORTANT
Chemistry for Cambridge International AS & A Level Coursebook with Digital Access (2 Years)>Chapter 2 - Electrons in Atoms>BEFORE YOU START>Q 8
Practice writing units in standard form,e.g g/cm3becomes g cm-3(the negative 3 shows that the cm3 is the divisor). Try changing the following into the standard form: 
KJ/mol
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 ?
EASY
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 1
Write the simple electronic configuration of the following atom, showing the principal quantum number shells only.
Sulphur; The atomic number of sulphur, Z=16