Discussion Forum
Que.  Properties of electron and protons were completely discovered in 
a.  1895 
b.  1899 
c.  1900 
d.  1980 
Correct Answer:1895

Que.  Properties of electron and protons were completely discovered in 
a.  1895 
b.  1899 
c.  1900 
d.  1980 
Correct Answer:1895
