Physical Change because a new substance was not created and if it was a chemical change, a new substance would have to be created.
Answer: Option (e) is the correct answer.
Explanation:
Formula to calculate radius is as follows.
p(r) = 
= 
= 0
+
= 0

= 
r = 
Thus, we can conclude that most likely radius at which the electron would be found is
.
Probably, above 100 Degree Celsius.