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OleMash [197]
3 years ago
10

An atom of cadmium that has 66 neutrons has a mass number of

Chemistry
1 answer:
SSSSS [86.1K]3 years ago
7 0

Answer:

113

Explanation:

We are given that the atom of cadmium has 66 neutrons:

  Number of neutrons in Cd  = 66

Now;

 Mass number  = ?

The mass number of an element is the sum of the number of protons and number of neutrons

     Mass number  = number of protons + number of neutrons

 By the position of cadmium, it has an atomic number of 47 and this is the number of protons

     Mass number  = 47 + 66  = 113

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