Physics, 22.03.2020 04:22 Morganwing1019

I got the other ones but I can't figure thins out. I asked my uncle but he doesn't know either. Please help!

Sodium has an atomic number of 11 and has a net charge of 0. When sodium combines with chlorine, it has a net charge of +1. Why?
A) Sodium loses a negative electron when forming chemical bonds.
B) Sodium gains a + proton when forming chemical bonds.
C) Sodium loses a + proton when forming chemical bonds.
D) Sodium shares a negative electron with chlorine.

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I got the other ones but I can't figure thins out. I asked my uncle but he doesn't know either. Plea...