A) have specific atomic numbers
B) have same number of protons
C) have specific atomic number and mass numbers
D) are isotopes
Correct Answer: C
Solution :
Nuclides have a definite number of protons and neutrons and consequently definite atomic number and mass number. Such as oxygen nuclei contains 8 protons and 8 neutrons. \[(_{8}^{16}O)\]. The atomic number is 8 and mass number = number of neutrons + number of protons = 8 + 8 = 16 While isotopes are atoms with same atomic number but different mass number.
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