AQA Chemistry A-Level - Atomic Structure QP
Q1.
This question is about atomic structure.
(a) The figure below is a model proposed by Rutherford to show the structure
of an atom.
State two features of the current model that are not shown in the
Rutherford model.
Feature 1 of the current model _________________________________
___________________________________________________________
___________________________________________________________
Feature 2 of the current model _________________________________
___________________________________________________________
___________________________________________________________
(2)
(b) A sample of tin is analysed in a time of flight mass spectrometer.
The sample is ionised by electron impact to form 1+ ions.
The table below shows data about the four peaks in this spectrum.
m/z Percentage abundance
112 22.41
114 11.78
117 34.97
120 To be determined
Give the symbol, including mass number, of the ion that reaches the
detector first.
Page 1 of 25
,AQA Chemistry A-Level - Atomic Structure QP
Calculate the relative atomic mass of tin in this sample. Give your answer
to 1 decimal place.
Symbol of ion _______________
Relative atomic mass ______________________
(4)
(Total 6 marks)
Q2.
In a time of flight mass spectrometer, molecule X is ionised using electrospray
ionisation.
What is the equation for this ionisation?
A X(l) + e– → X+(g) + 2 e–
B X(g) + e– → X+(g) + 2 e–
C X(l) + H+ → XH+(g)
D X(g) + H+ → XH+(g)
(Total 1 mark)
Page 2 of 25
, AQA Chemistry A-Level - Atomic Structure QP
Q3.
What is the electron configuration of V2+ in the ground state?
A 1s2 2s2 2p6 3s2 3p6 3d3
B 1s2 2s2 2p6 3s2 3p6 3d1 4s2
C 1s2 2s2 2p6 3s2 3p6 3d3 4s2
D 1s2 2s2 2p6 3s2 3p6 3d5 4s2
(Total 1 mark)
Q4.
Which atom has one more proton and two more neutrons than ?
A
B
C
D
(Total 1 mark)
Page 3 of 25
Q1.
This question is about atomic structure.
(a) The figure below is a model proposed by Rutherford to show the structure
of an atom.
State two features of the current model that are not shown in the
Rutherford model.
Feature 1 of the current model _________________________________
___________________________________________________________
___________________________________________________________
Feature 2 of the current model _________________________________
___________________________________________________________
___________________________________________________________
(2)
(b) A sample of tin is analysed in a time of flight mass spectrometer.
The sample is ionised by electron impact to form 1+ ions.
The table below shows data about the four peaks in this spectrum.
m/z Percentage abundance
112 22.41
114 11.78
117 34.97
120 To be determined
Give the symbol, including mass number, of the ion that reaches the
detector first.
Page 1 of 25
,AQA Chemistry A-Level - Atomic Structure QP
Calculate the relative atomic mass of tin in this sample. Give your answer
to 1 decimal place.
Symbol of ion _______________
Relative atomic mass ______________________
(4)
(Total 6 marks)
Q2.
In a time of flight mass spectrometer, molecule X is ionised using electrospray
ionisation.
What is the equation for this ionisation?
A X(l) + e– → X+(g) + 2 e–
B X(g) + e– → X+(g) + 2 e–
C X(l) + H+ → XH+(g)
D X(g) + H+ → XH+(g)
(Total 1 mark)
Page 2 of 25
, AQA Chemistry A-Level - Atomic Structure QP
Q3.
What is the electron configuration of V2+ in the ground state?
A 1s2 2s2 2p6 3s2 3p6 3d3
B 1s2 2s2 2p6 3s2 3p6 3d1 4s2
C 1s2 2s2 2p6 3s2 3p6 3d3 4s2
D 1s2 2s2 2p6 3s2 3p6 3d5 4s2
(Total 1 mark)
Q4.
Which atom has one more proton and two more neutrons than ?
A
B
C
D
(Total 1 mark)
Page 3 of 25
