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Firlakuza [10]
3 years ago
9

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

Chemistry
1 answer:
n200080 [17]3 years ago
5 0
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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