As compared C12 atom, C14 atom has

(a) Two extra protons and two extra electrons
(b) Two extra protons but no extra electrons
(c) Two extra neutrons and no extra electrons
(d) Two extra neutrons and two extra electrons

(c)  For C126 , p = 6, e = 6, n = 6

For C146, p = 6, e = 6, n = 8

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