Register to reply

Atomic Physics - rest mass of Deuterium

by joeykeys
Tags: atomic, deuterium, mass, physics, rest
Share this thread:
Nov14-09, 09:47 AM
P: 11
1. The problem statement, all variables and given/known data

Calculate the rest mass of Deuterium nucleus.

2. Relevant equations

Is it correct to calculate its mass using hydrogen?
i.e. 2*rest mass of hydrogen?..

3. The attempt at a solution

As stated in text book,
the rest mass of deuterium = 3.34330*10^-27 kg

If it is calculated from hydrogen (my "theory" as above) = 2*(1.67338*10^-27) = 3.34676*10^-27 kg

My question is..
Is my theory correct or there is something wrong with my concept?..
Is there any correct ways to find out the mass of deuterium without looking from textbook's data?

Thank you!
Phys.Org News Partner Science news on
'Smart material' chin strap harvests energy from chewing
King Richard III died painfully on battlefield
Capturing ancient Maya sites from both a rat's and a 'bat's eye view'
Nov14-09, 11:21 AM
P: 12
I think the problem arises in the fact that a Deuterium nucleus is a Proton and a Neutron, not 2 Protons, and the masses are slightly different.

Register to reply

Related Discussions
Chemistry - isotpic mass, atomic mass, mass number Biology, Chemistry & Other Homework 1
Atomic physics - mass ration Introductory Physics Homework 3
Re: rest mass/relativistic mass question General Physics 3
Is there a quanta of rest mass? say multiples of electron mass? High Energy, Nuclear, Particle Physics 20
Is there a quanta of rest mass? say multiples of electron mass? Beyond the Standard Model 1