Physics · Oct / Nov 2019 · Paper 21 · Question 7
5054
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Table 7.1 shows the composition of four neutral atoms and one atom that has been ionised. These five particles are labelled P, Q, R, S and T. Table 7.1 P Q R S T number of electrons 17 18 18 19 20 number of neutrons 20 20 24 23 21 number of protons 17 19 18 19 20
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7(a)(i)[1]
7(a)(ii)[1]
7(b)[1]
7(c)(i)[1]
7(c)(ii)[1]
7(c)(iii)[1]
7(c)(iv)[3]
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