19. What gives an atomic nucleus its
positive charge?
A. ions
B. protons
neutrons
D. electrons
C, Dent

The correct choice is, B: protons

Explanation:

Protons have a positive charge whereas neutrons have no charge and electrons have a negative charge. Due to positive charge of protons, nucleus of an atom acquires a positive charge. Therefore, we can conclude that protons are the particles give the nucleus its positive charge.

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