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An isotope of mercury has 80 protons and 120 neutrons. What is the mass number of this isotope? 40 80 120 200

An isotope of mercury has 80 protons and 120 neutrons. What is the mass number of this isotope? 40 80 120 200
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2 votes
An isotope of mercury has 80 protons and 120 neutrons. What is the mass number of this isotope?

40

80

120

200

asked
User Ceri Turner
by
8.2k points

1 Answer

1 vote
the correct answer is two hundred for its mass number as eighty plus hundred and twenty is two hundred hence the answer is the last option
answered
User Sandy Muspratt
by
8.0k points
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