(a) The table gives the composition of six particles, A-F, which are either atoms or ions.
Particle
A
SJ
B
C
D
E
TI
F
Number of protons
14
19
15
16
11
12
Number of neutrons
14
20
16
16
12
12
(1) Which particles are atoms? Explain your choice.
Number of electrons
14
18
18
16
11
10
[2]
Which particles are positive ions? Give the charges on the particles you have
chosen.
[2]
b) Carbon has two isotopes - carbon-12 and carbon-14.
Using these examples, explain what is meant by the term isotope.
[2]