DP Physics (last assessment 2024)

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

Date	May 2018	Marks available	[Maximum mark: 2]	Reference code	18M.2.HL.TZ1.6a
Level	HL	Paper	2	Time zone	TZ1
Command term	Identify	Question number	a	Adapted from	N/A

[Maximum mark: 2]

18M.2.HL.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.

[2]

Markscheme

$_{{\mkern 1mu} {\mkern 1mu} 4}^{10}{\text{Be}} \to _{{\mkern 1mu} {\mkern 1mu} 5}^{10}{\text{B}} + _{ - 1}^{\,\,\,0}{\text{e}} + {\overline {\text{V}} _{\text{e}}}$

antineutrino AND charge AND mass number of electron $_{ - 1}^{\,\,\,0}{\text{e}}$ , $\overline {\text{V}}$

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

Do not accept V.

Accept ${\bar V}$ without subscript e.

[2 marks]

Syllabus sections

Core

Core » Topic 7: Atomic, nuclear and particle physics » 7.1 – Discrete energy and radioactivity

Core » Topic 7: Atomic, nuclear and particle physics

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

Select a Test

Syllabus sections

Confirm action