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Consider the following statements concerning electrons :(I) Electrons are universal constitutents of matter (II) J.J. Thomson received the very first Nobel Prize in Physics for discovering the electron (III) The mass of the electron is about 1/2000 of that of a neutron (IV) According to Bohr the linear momentum of the electron is quantised in the hydrogen atom. Which of the above statements are NOT correct ?
  • a)
    I,II and IV
  • b)
    II and IV
  • c)
    III and IV
  • d)
    II and III
Correct answer is option 'C'. Can you explain this answer?
Most Upvoted Answer
Consider the following statements concerning electrons :(I) Electrons ...
Incorrect statements about electrons:

• III. The mass of the electron is about 1/2000 of that of a neutron.
• IV. According to Bohr, the linear momentum of the electron is quantized in the hydrogen atom.

Explanation:

• I. Electrons are universal constituents of matter. This statement is correct as electrons are a fundamental component of atoms, which make up all matter in the universe.

• II. J.J. Thomson received the very first Nobel Prize in Physics for discovering the electron. This statement is correct. Thomson discovered the electron in 1897 and was awarded the Nobel Prize in Physics in 1906 for his work.

• III. The mass of the electron is about 1/2000 of that of a neutron. This statement is incorrect. The mass of an electron is about 1/1836 of that of a neutron.

• IV. According to Bohr, the linear momentum of the electron is quantized in the hydrogen atom. This statement is incorrect. According to Bohr's model of the hydrogen atom, the angular momentum of the electron is quantized, not the linear momentum.

Therefore, the correct answer is option 'C' (III and IV are incorrect statements).
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Consider the following statements concerning electrons :(I) Electrons are universal constitutents of matter (II) J.J. Thomson received the very first Nobel Prize in Physics for discovering the electron (III) The mass of the electron is about 1/2000 of that of a neutron (IV) According to Bohr the linear momentum of the electron is quantised in the hydrogen atom. Which of the above statements are NOT correct ?a) I,II and IV b) II and IV c) III and IV d) II and III Correct answer is option 'C'. Can you explain this answer?
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