davidcanencio6468 davidcanencio6468

26-05-2017
Chemistry

contestada

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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sacwind2 sacwind2

26-05-2017

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

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