Question

As compared to ¹²C atom, ¹⁴C atom has

Options

• two extra protons and two extra electrons

• two extra protons but no extra electrons

• two extra neutrons and no extra electron

• two extra neutrons and two extra electron

Answer 1

two extra neutrons and no extra electron

¹²C and ¹⁴C are the two isotopes of carbon atom that have same atomic number, but different mass numbers. This means that they have same number of protons and electrons, but different number of neutrons. Therefore, ​^12​C has 6 protons, 6 electrons and 6 neutrons, whereas ​¹⁴C has 6 electrons, 6 protons and 8 neutrons.