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Anna [14]
3 years ago
12

Mercury has an atomic number of 80 and a mass number of 200.

Chemistry
2 answers:
denis23 [38]3 years ago
8 0
C. The mass number is the amount of Protons and electrons there are combined, so 200 - 80 is 120.
steposvetlana [31]3 years ago
3 0

<u>Answer:</u> The correct answer is Option c.

<u>Explanation:</u>

Atomic number is defined as the number of protons or electrons that are present in a neutral atom.

Atomic number = number of protons = number of electrons

Mass number is defined as the sum of number of protons and number of neutrons present in an atom.

Mass number = Number of neutrons + Number of protons.

We are given:

Atomic number = 80

Mass number = 200

Number of neutrons = Mass number - Atomic number = 200 - 80 = 120

Hence, the correct answer is Option c.

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