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  • 07-04-2020
  • Physics
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The total number of protons plus neutrons in an atom of ⁴⁵₂₀Ca is

A.) 20
B.) 25
C.) 45
D.) 65

Respuesta :

romainkelly7 romainkelly7
  • 07-04-2020

Answer:

b

Explanation:easy

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