Mad Man
Badges: 16
Rep:
?
#1
Report Thread starter 2 months ago
#1
The radius of a nucleus of the iron nuclide is 4.35 × 10–15 m.

What is the radius of a nucleus of the uranium nuclide ?



A

2.69 × 10–15 m



B

2.89 × 10–15 m



C

6.55 × 10–15 m



D

7.05 × 10–15 m



(Total 1 mark)

How would I even do this? It isn't on the spec
1
reply
golgiapparatus31
Badges: 13
Rep:
?
#2
Report 2 months ago
#2
Nuclear density is constant

density = mass/volume
mass = density x volume
density constant so mass proportional to volume
hence ratio of mass number = ratio of volume
but volume is proportional to nuclear radius^3
so ratio of mass number = (ratio of nuclear radius)^3

i.e mass of uranium nuclide / mass of iron nuclide = (nuclear radius of uranium nuclide / nuclear radius of iron nuclide)^3

hence replace and solve for the unknown
0
reply
X

Quick Reply

Attached files
Write a reply...
Reply
new posts
Back
to top
Latest
My Feed

See more of what you like on
The Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.

Personalise

Have you experienced financial difficulties as a student due to Covid-19?

Yes, I have really struggled financially (56)
17.39%
I have experienced some financial difficulties (91)
28.26%
I haven't experienced any financial difficulties and things have stayed the same (120)
37.27%
I have had better financial opportunities as a result of the pandemic (44)
13.66%
I've had another experience (let us know in the thread!) (11)
3.42%

Watched Threads

View All