An incomplete nuclear equation for the alpha decay of radium-222 is as
follows:
222 ra → rn+ , a
88
calculate the values of the constants x and y.
x
=
[2 marks]

12 is it do you think so

the correct answer would be b. amelia, because the particals of gas move really fast (charged particals) and gas also has a lot of room (particals move independently) so the only answer that has both of those is amelia's.