6.3 Nuclear equations and decay

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Question 11

F

Strontium-90 decays by beta minus decay to form yttrium-90.

The equation for this decay is

{}^{90}_{38}\mathrm{Sr} \rightarrow {}^{90}_{39}\mathrm{Y} + {}^{a}_{b}\mathrm{e}

a.

Give the values of $a\,$ and $b$ .

[2]

b.

Calculate the number of neutrons in a yttrium-90 nucleus.

[2]

c.

A particle is emitted from the nucleus in beta minus decay.

Explain why the mass number of the nucleus does not change.

[2]

d.

Yttrium-90 also decays by beta minus decay.

Give the atomic number of the nucleus that is formed.

[1]

6.3 Nuclear equations and decay

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43

Question 11

F

Strontium-90 decays by beta minus decay to form yttrium-90.

The equation for this decay is

{}^{90}_{38}\mathrm{Sr} \rightarrow {}^{90}_{39}\mathrm{Y} + {}^{a}_{b}\mathrm{e}

a.

Give the values of $a\,$ and $b$ .

[2]

b.

Calculate the number of neutrons in a yttrium-90 nucleus.

[2]

c.

A particle is emitted from the nucleus in beta minus decay.

Explain why the mass number of the nucleus does not change.

[2]

d.

Yttrium-90 also decays by beta minus decay.

Give the atomic number of the nucleus that is formed.

[1]

6.3 Nuclear equations and decay

Question 11

Markscheme

6.3 Nuclear equations and decay

Question 11

Markscheme

6.3 Nuclear equations and decay

Question 11

6.3 Nuclear equations and decay Questions

6.3 Nuclear equations and decay

Question 11

6.3 Nuclear equations and decay Questions