3 years ago

Mercury has an atomic number of 80 and a mass number of 200. How many neutrons are in one atom of mercury?

Chemistry

2 answers:

PSYCHO15rus [73]3 years ago

5 0

120 neutrons are present in mercury

vivado [14]3 years ago

5 0

Answer:

120 neutrons

Explanation:

Mercury has an atomic number of 80. The atomic number (Z) represents the number of protons. Then,

Z = p⁺ = 80

Mercury has a mass number of 200. The mass number (A) represents the sum of protons and neutrons. Then,

A = p⁺ + n° = 200

We can establish that,

A = Z + n°

n° = A - Z

n° = 200 - 80 = 120

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