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MCQs

Total Questions : 622 | Page 63 of 63 pages
Question 621. What electrical charge does a proton have?
  1.    +1
  2.    0
  3.    -1
  4.    +2
 Discuss Question
Answer: Option A. -> +1
Question 622. An atom has 10 protons, 15 neutrons and 10 electrons what is its mass number
  1.    20
  2.    10
  3.    35
  4.    25
 Discuss Question
Answer: Option D. -> 25

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