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Pearson Edexcel Level 3 GCE In Chemistry (9CH0) Paper 01: Advanced Inorganic and Physical Chemistry QP & MS June 2024

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Answer ALL questions. Some questions must be answered with a cross in a box . If you change your mind about an answer, put a line through the box and then mark your new answer with a cross . 1 This question is about atomic structure. (a) Complete the table. (3) Species Number of protons Number of neutrons Number of electrons 32S 33S 34S2− (b) A sample of sulfur was found to contain only four isotopes. (i) Complete the table to show the percentage abundance of 34S. (1) Isotope 32S 33S 34S 36S Percentage abundance 95.02 0.75 0.02 (ii) Calculate the relative atomic mass (Ar) of the sulfur in this sample using the data in the table. Give your answer to two decimal places. (2) (Total for Question 1 = 6 marks) 2 ■■■■ DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA DO NOT WRITE IN T

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Pearson Edexcel Level 3 GCE In Chemistry (9CH0) Paper 01:
Advanced Inorganic and Physical Chemistry QP & MS June 2024

, surname names


Number Number




Morning (Time: 1 hour 45 minutes) Paper


Chemistry ■ ■


Advanced
PAPER 1: Advanced Inorganic and Physical Chemistry



Turn over


P76895A
©2024 Pearson Education Ltd.
F:1/1/1/1/

, Answer ALL questions.

Some questions must be answered with a cross in a box . If you change your mind about an




DO NOT WRITE IN THIS AREA
answer, put a line through the box and then mark your new answer with a cross .

1 This question is about atomic structure.
(a) Complete the table.
(3)


Species Number of protons Number of neutrons Number of electrons
32
S
33
S
34 2−
S


(b) A sample of sulfur was found to contain only four isotopes.




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(i) Complete the table to show the percentage abundance of 34S.
(1)

32 33 34 36
Isotope S S S S

Percentage
95.02 0.75 0.02
abundance


(ii) Calculate the relative atomic mass (Ar ) of the sulfur in this sample using the
data in the table. Give your answer to two decimal places.
(2)



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(Total for Question 1 = 6 marks)

2
■■■■

, 2 This question is about the formation of ions.

(a) Explain the trend in the values of the first electron affinities of the
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elements shown.
(4)


Element First electron affinity / kJ mol−1

chlorine −349

bromine −325

iodine −295


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(b) Which of these isoelectronic ions has the smallest ionic radius?
(1)
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A S2−
B Cl−

C K+

D Ca2+




3
■■■■ Turn over

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