DP Physics (last assessment 2024)

Question 18M.2.SL.TZ1.6a

[Maximum mark: 1]

18M.2.SL.TZ1.6a

The radioactive nuclide beryllium-10 (Be-10) undergoes beta minus (β–) decay to form a stable boron (B) nuclide.

(a)

Identify the missing information for this decay.

[1]

Markscheme

$_{{\mkern 1mu} {\mkern 1mu} 4}^{10}{\text{Be}} \to _{{\mkern 1mu} {\mkern 1mu} 5}^{10}{\text{B}} + \beta + {\overline {\text{V}} _{\text{e}}}$

conservation of mass number AND charge $_{\,\,5}^{10}{\text{B}}$ , $_{{\mkern 1mu} {\mkern 1mu} 4}^{10}{\text{Be}}$

Correct identification of both missing values required for [1].

[1 mark]

Syllabus sections