An atom has 17 protons and 17 electrons. What is the mass number of the atom? (A) 17 (B) 34 (C) 51 (D) Insufficient information
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Answer:
Correct option is A)
The isotopes have same number of protons and electrons and different number of neutrons. So the correct option of isotope of given element is option A.
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Answer:
A) 17.
17 is the mass number.
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