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2 years ago

the atomic number of cesium (Cs) is 55. If an atom of cesium has 78 neutrons, what is the atomic mass of cesium?

Physics

2 answers:

Slav-nsk [51]2 years ago

7 0

Atomic mass= number of protons + number of neutrons
$55 + 78 = 133$
hope this helps

Lilit [14]2 years ago

6 0

Answer:

133

Explanation:

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