CUET Preparation Today
Match List-I with List-II
Choose the correct answer from the options given below: |
(A)-(I), (B)-(II), (C)-(IV), (D)-(III) (A)-(II), (B)-(I), (C)-(III), (D)-(IV) (A)-(I), (B)-(III), (C)-(IV), (D)-(II) (A)-(III), (B)-(I), (C)-(IV), (D)-(II) |
(A)-(III), (B)-(I), (C)-(IV), (D)-(II) |
The correct answer is Option (4) → (A)-(III), (B)-(I), (C)-(IV), (D)-(II)
(A) Oxygen — (III) 16: Oxygen has an atomic number of 8. Its most stable isotope contains 8 protons and 8 neutrons, resulting in an atomic mass of 16 u. (B) Carbon — (I) 12: Carbon has an atomic number of 6. The most common isotope ($^{12}\text{C}$) has 6 protons and 6 neutrons, serving as the standard for the atomic mass scale with a mass of 12 u. (C) Calcium — (IV) 40: Calcium has an atomic number of 20. Its standard atomic mass is approximately 40 u. (D) Sodium — (II) 23: Sodium has an atomic number of 11. It has 11 protons and 12 neutrons, giving it an atomic mass of 23 u.
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