MEDIUM
AS and A Level
IMPORTANT
Earn 100
Explain the shape of the graph you have drawn for (ionization energy) for Chlorine varies when plotted against number of electron removed.
Important Questions on Electrons in Atoms
EASY
AS and A Level
IMPORTANT
What are the relative mass and relative charges of proton and electron ?
MEDIUM
AS and A Level
IMPORTANT
What is meant by the terms electron shell and electronic configuration ?
MEDIUM
AS and A Level
IMPORTANT
Explain to another learner.
Why in terms of electronic configuration, the gases helium,neon and argon are relatively unreactive.
MEDIUM
AS and A Level
IMPORTANT
Draw a labelled diagram to show the structure of a calcium atom.
EASY
AS and A Level
IMPORTANT
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
Practise writing units in standard form,e.g becomes (the negative 3 shows that the is the divisor).Try changing the following into the standard form:
EASY
AS and A Level
IMPORTANT
Practice writing units in standard form,e.g becomes (the negative 3 shows that the is the divisor). Try changing the following into the standard form:
MEDIUM
AS and A Level
IMPORTANT
Why must the inside of an electron microscope be at very low pressure so that there is hardly any air present ?
