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Which of the following was discovered first?

Armed Forces Police Chemistry Exams Quizzes MCQs Quizzes Atomic Structure

Question:
Which of the following was discovered first?

Option A):
Mass of electron
Option B):
All of above at same time
Option C):
Charge of electron
Option D):
Charge to mass ration of electrons

Correct Answer is Option D):
Charge to mass ration of electrons

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