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
I only
I and II only
I and III only
II and IV only
I, II, III and IV
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Discussions (8)
I think 'E' should be the answer cos:
I: Energy is needed to remove electrons from an atom. That is where ionization energy and the likes come from
IV: This has to do with binding energy.
My school please look into this.
All of the statements (I, II, III, and IV) are correct about atoms.
* I. Energy is needed to remove electrons from an atom. This is because electrons are attracted to the positively charged protons in the nucleus.
* II. Particles in the nucleus of an atom are bound together by strong forces. These forces are much stronger than the electrical forces that hold electrons in orbit around the nucleus.
* III. A large amount of energy is required to separate the particles in the nucleus of an atom. This is because of the strong forces holding them together.
* 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. This is an example of nuclear fission, which follows the principle of mass-energy equivalence.
I. Energy is needed to remove electrons from an atom
True – This is called ionization energy.
II. Particles in the nucleus of an atom are bound together by strong forces
True – This refers to the strong nuclear force, which binds protons and neutrons.
III. A large amount of energy is required to separate the particles in the nucleus of an atom
True – This is known as the nuclear binding energy.
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 True – This describes Einstein’s mass-energy equivalence E=mc2E=mc2, known as mass defect.
Correct Answer: E. I, II, III and IV
E is the correct answer, as all the statements apply to atoms. Please Myschool do the needful.
