*MEDAL*
Which types of decay will cause no decrease in the atomic mass of a nuclei?

Question

anonymous · Answer

A. alpha, beta, and gamma
B. beta, positron, and gamma
C. alpha and garnma
D. positron emission only


I WAS THINKING "$$B$$" IS THE ANSWER!

anonymous · Answer

Nevermind, the answer is D. Correct? @Abhisar

anonymous · Answer

I thought beta was also an answer, so I chose B in the first place...

abhisar · Answer

Positron emission is a decay in which proton gets converted into a neutron and a positron and a neutrino is emmited

ex: $\sf Mg → Na + e+ + ν_e$

Notice that mass number of both the elements are same i.e 23.

abhisar · Answer

Same thing happens in beta decay.

abhisar · Answer

got it ?

anonymous · Answer

so B was correct?

abhisar · Answer

yes