DP Chemistry (last assessment 2024)

Test builder »

Question 18N.3.hl.TZ0.12d.i

Select a Test
Date November 2018 Marks available [Maximum mark: 1] Reference code 18N.3.hl.TZ0.12d.i
Level hl Paper 3 Time zone TZ0
Command term Deduce Question number d.i Adapted from N/A
d.i.
[Maximum mark: 1]
18N.3.hl.TZ0.12d.i

The Sun’s energy is produced by the fusion of hydrogen nuclei.

Nuclear energy produces ionizing radiation which leads to the formation of free radicals.

(d.i)

Deduce a Lewis (electron dot) structure of the superoxide, O2–, free radical.

[1]

Markscheme

OR

 

Accept any combination of dots, crosses and lines to represent electrons.

Do not penalize missing brackets.

Penalize missing negative charge.

Syllabus sections