Radioactivity was first discovered in salts of which of the following elements?
A) sodium
B) radium
C) radon
D) uranium
Correct Answer:
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Q10: Which of the following is the relationship
Q11: Which of the following forms of radiation
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Q13: Which of the following was Becquerel studying
Q14: Which of the following forms of radiation
Q16: Which of the following gives the correct
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Q18: Which of the following scientists discovered X-rays?
A)
Q19: Which of the following scientists discovered radioactivity?
A)
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