IGCSE Chemistry 0620/42/F/M/21 Q1

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Cher Questions Solution Bank Rumusan Jawapan SPM & IGCSE Questions Answers Solution

1 The table shows the numbers of protons, neutrons and electrons in particles A to I.
particle protons neutrons electrons
A 1 0 0
B 6 6 6
C 6 8 6
D 10 10 10
E 16 16 18
F 17 18 17
G 18 22 18
H 19 20 19
I 20 20 18
Answer the following questions about particles A to I. Each letter may be used once, more than once or not at all.
(a) State which of the particles A to I:

(i) is an anion ………………………………………… [1]

(ii) are cations ……………….. and ……………….. [2]

(iii) are noble gas atoms ……………….. and ……………….. [2]

(iv) is a halogen atom ………………………………………… [1]

(v) is a Group I atom ………………………………………… [1]

(vi) have the same nucleon number ……………….. and ……………….. [1]

(vii) causes acidity in aqueous solutions ………………………………………… [1]

(viii) is used to define the relative atomic mass of elements. ………………………………………… [1]

(b) Explain why B and C are isotopes of the same element.
………………………………………………………………………………………………………………………………….
……………………………………………………………………………………………………………………………. [2]

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    2022-07-05T13:54:59+08:00

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