Problem: Beryllium's atomic mass is 9, and its atomic number is 4. How many neutrons are found in a beryllium atom?a) 2b) 5c) 13d) 9e) 4

FREE Expert Solution

Recall: Atomic number = number of protons

     Atomic mass = number of protons + number of neutrons

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Problem Details

Beryllium's atomic mass is 9, and its atomic number is 4. How many neutrons are found in a beryllium atom?

a) 2

b) 5

c) 13

d) 9

e) 4

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