Chemistry · Oct / Nov 2024 · Paper 41 · Question 2
0620
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This question is about atomic structure and the Periodic Table.
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2(a)[1]
total number of protons and neutrons in the nucleus of an atom
2(b)[1]
they are the same
2(c)[2]
M1 2,8,4
M2 2,8,8
2(d)[5]
M1 12n + 11e
M2 10e
M3 Ga
M4 69 above 31 and to the left of the symbol
M5 charge of 3 +
2(e)(i)[2]
M1 atom(s) of the same element
M2 with different number of neutrons
2(e)(ii)[2]
M1 (3 × 203) AND (7 × 205) (= 2044)
M2 204.4
2(e)(iii)[1]
same number of electrons / same electronic configuration
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