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Which of the following statements about the atom is/are c...

Which of the following statements about the atom is/are correct?

I. Energy is needed to remove electrons from an atom
II. Particles in the nucleus of an atom are bound together by strong forces.
III. A large amount of energy is required to separate the particles in the nucleus of an atom.
IV. When the nucleus of a uranium atom is split, the energy released accounts for the difference in the masses of the products and the parent nucleus

A.

I only

B.

I and II only

C.

I and III only

D.

II and IV only

E.

I, II, III and IV

Correct answer is D

No explanation has been provided for this answer.