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easyMCQNEET 20232026Chemistry
1 mark

Select the correct statements from the following:A. Atoms of all elements are composed of two fundamental particles.B. The mass of the electron is .C. All the isotopes of a given element show same chemical properties.D. Protons and electrons are, collectively known as nucleons.E. Dalton's atomic theory, regarded the atom as an ultimate particle of matter.Choose the correct answer from the options given below:

  1. A
    A, B and C only
  2. B
    C, D and E only
  3. C
    A and E only
  4. D
    B, C and E only

Solution & Step-by-step Explanation

1. Statement A is incorrect: Atoms are generally composed of three fundamental particles: electrons, protons, and neutrons (except Hydrogen-, which lacks neutrons).2. Statement B is correct: The rest mass of an electron is approximately .3. Statement C is correct: Chemical properties depend on the electronic configuration (number of electrons), which is identical for all isotopes of an element.4. Statement D is incorrect: Nucleons refer to protons and neutrons found in the nucleus.5. Statement E is correct: Dalton proposed that atoms are indivisible, ultimate particles of matter.Correct statements are B, C, and E.

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Select the correct statements from the following:A. Atoms of all elements are composed of two fundamental particles.B. The mass of the electron is .C. All the isotopes of a given element show same chemical properties.D. Protons and electrons are, collectively known as nucleons.E. Dalton's atomic theory, regarded the atom as an ultimate particle of matter.Choose the correct answer from the options given below:
A
A, B and C only
B
C, D and E only
C
A and E only
D
B, C and E only

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