Concepts Of Physics MCQ Edition [Volume 2]PhysicsThe Nucleus

In comparison to the ¹² C atom, the ¹⁴ C atom possesses

Options

Atwo extra neutrons and two extra electrons
Btwo extra neutrons and no extra electron
Ctwo extra protons but no extra electron
Dtwo extra protons and two extra electrons

Correct answer

B. two extra neutrons and no extra electron

Step-by-step solution

Carbon has an atomic number Z = 6 . For the ¹² C atom, the number of protons is 6 , the number of electrons is 6 , and the number of neutrons is 12 - 6 = 6 . For the ¹⁴ C atom, the number of protons is 6 , the number of electrons is 6 , and the number of neutrons is 14 - 6 = 8 . Therefore, the ¹⁴ C atom possesses two extra neutrons and no extra electron compared to the ¹² C atom.

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