8. Give the symbol of and the number of neutrons in one atom of: (Round the MASS numbers so they are ALWAYS whole numbers…show your calculations)
Beryllium
Calcium
Sulfur

Explanation:

Given species;

  Beryllium

  Calcium

   Sulfur

Unknown:

Give the symbol, number of neutrons and the mass number

Solution:

The symbols of the species are;

    Beryllium  -   Be

    Calcium     -  Ca

     Sulfur       -  S

Number of neutrons:

    Beryllium - 5

   Calcium    - 20

   Sulfur       -  16

Mass number :

  Beryllium - 9

    Calcium - 40

     Sulfur -    32

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