Answer:
they gain the few electrons they need to form full octets
They gain the few electrons they need to form full octets. Hence, option C is correct.
Electrons are the smallest of the particles that make up an atom, and they carry a negative charge
The outer shells of non-metal atoms gain electrons when they form ions: the ions formed are negative because they have more electrons than protons. the ions formed have full outer shells.
Hence, option C is correct.
Learn more about electrons here:
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