Answer:
[tex]Positron\rightarrow _{1} ^{0}e[/tex]
Explanation:
lets take the particle is X, the given decay reaction can be written as follows
[tex]_{25} ^{49}Mn\rightarrow _{24}^{49}Cr+X[/tex]
Now by using mass balancing:
The sum of the mass of right hand side=The sum of the mass of left hand side
49=49+M
M=0
Now by using atomic number balancing:
Atomic number on right side=Atomic number on left side
25 = 24 + Z
Z=1
Therefore we can say that , the mass of that unknown particle is 0 unit and atomic number is 1.
Thus that particle will be positron.
[tex]Positron\rightarrow _{1} ^{0}e[/tex]
