Answer: It is C I just did this question in math class
Explanation:
A. The minimum amount of energy required to remove one electron from an atom.
It might be electromagnetic force
Answer: 20%
Explanation:
Relative error = Absolute error/actual value
= 0.1/0.5
= 0.2
Hence,
Minimum % Relative error = 0.2 ×100%
= 20%