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The atomic number of an element is 19. Which is true of this element?

A.
Each atom has an atomic mass of 19.

B.
Each atom has 19 neutrons.

C.
Each atom has 19 protons.

D.
Each atom forms 19 ions.

Sagot :

LG123
C.
Each atom has 19 proton
 the atomic number is the same as protons
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