From Mock A · Paper 1: Inorganic and Physical Chemistry
1.12 marks
A sample of gallium contains 60.1% ⁶⁹Ga and 39.9% ⁷¹Ga. Calculate the relative atomic mass of gallium to 1 decimal place.
From Mock A · Paper 1: Inorganic and Physical Chemistry
1.21 mark
Give the electron configuration of an Fe³⁺ ion.
From Mock A · Paper 1: Inorganic and Physical Chemistry
1.32 marks
Explain why the first ionisation energy of sulfur is lower than that of phosphorus.
From Mock A · Paper 1: Inorganic and Physical Chemistry
1.44 marks
In a time-of-flight mass spectrometer, ⁷¹Ga⁺ ions are accelerated to a kinetic energy of 1.00 × 10⁻¹⁶ J and travel along a 1.50 m flight tube. Calculate the time of flight. KE = 1/2 mv2.
From Mock A · Paper 3: Practical skills, all content and multiple choice
71 mark
Which species has the same electron configuration as Ar?
From Mock B · Paper 1: Inorganic and Physical Chemistry
1.12 marks
In a time-of-flight mass spectrometer, all ions are given the same kinetic energy. Explain why ⁸¹Br⁺ ions reach the detector after ⁷⁹Br⁺ ions.
From Mock B · Paper 1: Inorganic and Physical Chemistry
1.23 marks
The mass spectrum of chlorine gas, Cl₂, has peaks at m/z 70, 72 and 74 in the ratio 9 : 6 : 1. Explain these peaks. (³⁵Cl : ³⁷Cl = 3 : 1)
From Mock B · Paper 1: Inorganic and Physical Chemistry
1.32 marks
The first five ionisation energies of element X (kJ mol⁻¹) are 578, 1817, 2745, 11 577, 14 842 (data are illustrative, written for this paper). Deduce the group of X and explain.
From Mock B · Paper 3: Practical skills, all content and multiple choice
101 mark
Which species has the same electron configuration as Ar?
From Mock C · Paper 1: Inorganic and Physical Chemistry
1.12 marks
Give the full electron configuration of a chromium atom and explain why it is unusual.
From Mock C · Paper 1: Inorganic and Physical Chemistry
1.22 marks
Explain why the first ionisation energy decreases down Group 2.
From Mock C · Paper 1: Inorganic and Physical Chemistry
1.33 marks
Describe how ions are formed and detected in a time-of-flight mass spectrometer using electrospray ionisation.
From Mock C · Paper 3: Practical skills, all content and multiple choice
101 mark
Which has the largest first ionisation energy?
Score 0 / 26 · 0 of 13 marked
This paper is written by Plasmo in the style of the AQA A-Level Chemistry exam. It is not a past paper and is not produced or endorsed by the exam board.