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Determine the Mass Number of the Following Elements:

Al - 13 Protons 15 Neutrons

B - 5 Protons 6 Neutrons

C - 6 Protons 8 Neutrons

Sc - 21 Protons 25 Neutrons

Na - 11 Protons 13 Neutrons

1 Answer

10 votes

Answer:

Al 28

B 11

C 14

Sc 46

Na 24

Step-by-step explanation:

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