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An alpha particle consists of two protons and two

neutrons. What is the charge of an alpha particle?

(1) 1.25 × 10^19 C (3) 6.40 × 10^–19 C

(2) 2.00 C (4) 3.20 × 10^–19 C

Verified Answer :

The Elementary Charge is given by:

\(e=1.6*10^{-19}\)
 
     In the alpha particle there are two protons, so the total charge will be:

\(C=e+e \\ C=2*1.6*10^{-19} \\ \boxed {C=3.2*10^{-19}}\)
 
     Remember that the neutron has no charge, therefore not appear in the calculation.

Number 4
  
If you notice any mistake in my english, please let me know, because i am not native.

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