Answer:
No, Is it possible for any single atom of chlorine to have a mass number of exactly 35.45.
Step-by-step explanation:
Average Atomic Mass of Chlorine:
Naturally Chlorine exists in many isotopes among which only two isotopes are stable. There atomic masses and natural abundance is given as,
³⁵Cl Atomic Mass = 35 amu
³⁵Cl natural Abundance = 76 %
³⁷Cl Atomic Mass = 37 amu
³⁷Cl natural Abundance = 24 %
Average Atomic Mass = (35 × 0.76) + (37 × 0.24)
Average Atomic Mass = 26.6 + 8.88
Average Atomic Mass = ≈ 35.48
Conclusion:
Hence, it is cleared that a single Chlorine atom can have a whole number of atomic mass (sum of protons and neutrons). And therefore no single chlorine atom can have an atomic mass in decimals.