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Which of the following pairs is/are correctly matched?
1. Isotopes : Atoms with same atomic number but different atomic mass.
2. Isobars : Atoms with same number of neutrons but different atomic number.
3. Isotones : Atoms with same mass number but different atomic number.

Q. Select the correct answer using the codes given below :
  • a)
    1, 2 and 3
  • b)
    1 only
  • c)
    1 and 2 only
  • d)
    2 only
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
Which of the following pairs is/are correctly matched?1. Isotopes : At...
Isotopes are variants of a particular chemical element: while all isotopes of a given element share the same number of protons and electrons, each isotope differs from the others in its number of neutrons. For example, carbon-12, carbon-13 and carbon-14 are three isotopes of the element carbon with mass numbers 12, 13 and 14 respectively. The atomic number of carbon is 6, which means that every carbon atom has 6 protons, so that the neutron numbers of these isotopes are 6, 7 and 8 respectively
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Which of the following pairs is/are correctly matched?1. Isotopes : At...
Isotopes, Isobars, and Isotones

Isotopes, Isobars, and Isotones are terms used in the study of atomic structure. Let's understand each of them in detail.

Isotopes
Isotopes are atoms that have the same atomic number but different atomic mass. They have the same number of protons in the nucleus but different numbers of neutrons. For example, carbon-12 and carbon-14 are isotopes of carbon. Carbon-12 has 6 protons and 6 neutrons, while carbon-14 has 6 protons and 8 neutrons.

Isobars
Isobars are atoms that have the same mass number but different atomic numbers. They have the same total number of nucleons (protons + neutrons) in the nucleus but different numbers of protons and neutrons. For example, carbon-14 and nitrogen-14 are isobars. Carbon-14 has 6 protons and 8 neutrons, while nitrogen-14 has 7 protons and 7 neutrons.

Isotones
Isotones are atoms that have the same number of neutrons but different atomic numbers and atomic masses. They have the same neutron number but different proton numbers and different mass numbers. For example, carbon-12 and boron-13 are isotones. Carbon-12 has 6 protons and 6 neutrons, while boron-13 has 5 protons and 8 neutrons.

Answer:
The correct option is B, i.e., 1 only. Isotopes are atoms with the same atomic number but different atomic masses. Isobars are atoms with the same mass number but different atomic numbers. Isotones are atoms with the same number of neutrons but different atomic numbers and atomic masses.
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Which of the following pairs is/are correctly matched?1. Isotopes : Atoms with same atomic number but different atomic mass.2. Isobars : Atoms with same number of neutrons but different atomic number.3. Isotones : Atoms with same mass number but different atomic number.Q.Select the correct answer using the codes given below :a)1, 2 and 3b)1 onlyc)1 and 2 onlyd)2 onlyCorrect answer is option 'B'. Can you explain this answer?
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Which of the following pairs is/are correctly matched?1. Isotopes : Atoms with same atomic number but different atomic mass.2. Isobars : Atoms with same number of neutrons but different atomic number.3. Isotones : Atoms with same mass number but different atomic number.Q.Select the correct answer using the codes given below :a)1, 2 and 3b)1 onlyc)1 and 2 onlyd)2 onlyCorrect answer is option 'B'. Can you explain this answer? for UPSC 2024 is part of UPSC preparation. The Question and answers have been prepared according to the UPSC exam syllabus. Information about Which of the following pairs is/are correctly matched?1. Isotopes : Atoms with same atomic number but different atomic mass.2. Isobars : Atoms with same number of neutrons but different atomic number.3. Isotones : Atoms with same mass number but different atomic number.Q.Select the correct answer using the codes given below :a)1, 2 and 3b)1 onlyc)1 and 2 onlyd)2 onlyCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for UPSC 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following pairs is/are correctly matched?1. Isotopes : Atoms with same atomic number but different atomic mass.2. Isobars : Atoms with same number of neutrons but different atomic number.3. Isotones : Atoms with same mass number but different atomic number.Q.Select the correct answer using the codes given below :a)1, 2 and 3b)1 onlyc)1 and 2 onlyd)2 onlyCorrect answer is option 'B'. Can you explain this answer?.
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