Physics · Oct / Nov 2022 · Paper 42 · Question 10
0625
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10(a)(i)[2]
(proton number) 2
(nucleon number) 4
10(a)(ii)[1]
3.2 × 10–19 (C)
10(b)[3]
230 a →
230 c +
0
R
A
8889
–1
any two from:
C2
nucleon numbers 230 on left AND 230 on rightRa and proton number 88 on left AND Ac and proton number 89 on right0 .
–110(c)[2]
(mass =) 1.2 × 10–12 g
3 half-lives OR 9.6 × 10–12 / 8 OR 9.6 × 10–12 / 23
C1
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