An isotope of oxygen has mass number 18. Other isotopes of oxygen will have the same

Options :
  1. mass number
  2. atomic weight
  3. number of neutrons
  4. number of protons
Answer and Explanation :-

Answer: Option 4


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To me, all creativity is magic. Ideas start out in the empty void of your head - and they end up as a material thing, like a book you can hold in your hand. That is the magical process. It's an alchemical thing. Yes, we do get the gold out of it but that's not the most important thing. It's the work itself.
-Alan Moore