Cannot be negative
Can have any value above zero
Can never be positive
Will always be positive
Answer is Right!
Answer is Wrong!
The correct answer is: A. Cannot be negative.
An electron in an atom can have any value of energy above zero, but it cannot have a negative energy. This is because the electron is bound to the atom by the electric force, and the electric force always attracts the electron to the nucleus. If the electron had a negative energy, it would be repelled by the nucleus and would fly away from the atom.
Option B is incorrect because the electron can have any value of energy above zero. Option C is incorrect because the electron can have a positive energy. Option D is incorrect because the electron cannot have a negative energy.