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A sodium ion has 11 protons, 11 neutrons, and 10 electrons.

Which equation below shows the correct way to calculate the net charge of this sodium ion?

A

$(+21) (1.6 \times { 10 }^{ -19 } \text{ C})$

B

$(+11) (1.6 \times { 10 }^{ -19 } \text{ C})$

C

$(+1) (1.6 \times { 10 }^{ -19 } \text{ C})$

D

$(-10) (1.6 \times { 10 }^{ -19 } \text{ C})$

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