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question_answer Discussion Board for a Question on Quiz: Chemistry (WAEC 2000)

50 Questions · Public · Objective · Quiz suitable for all ages

42 Click Here To Discuss Question

What is the mass number of an element if its atom contains 10 protons, 10 electrons and 12 neutrons?

Select 1 Option (1 Mks)
  • 32
  • 22
  • 20
  • 10
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