What is the Mass Ratio of Alpha Particles, Neutrons, and Gamma Rays?

AI Thread Summary
The mass ratio of alpha particles, neutrons, and gamma rays is correctly identified as 4:1:0. An alpha particle, which is essentially a helium nucleus, consists of two protons and two neutrons, contributing to its total mass. Neutrons have a mass of approximately 1, while gamma rays have negligible mass. The initial assumption that the ratio was 1:1:0 was incorrect. Understanding the composition of alpha particles clarifies the mass ratio.
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Homework Statement



which of the following mass ration is ture?

Mass of alpha-particles: mass of neutrons : mass of gamma- rays
equal to

A. 4 : 1 : 0
B. 4 : 0 : 1
C. 1 : 1 : 1
D. 1 : 1 :0


Homework Equations



nil

The Attempt at a Solution



I thought it's D
but the correct answer is A.
I can't get it..
 
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An alpha particle consists of 2 protons and 2 neutrons, which are of equal mass (well, very nearly, anyway).
 
wow... silly me.
Thank you!
 
Alpha particle (in the past aka "alpha radiation") is the common name for the helium nucleus.

Daniel.
 
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