Which statement matches a subatomic particle with its charge?
(1) a neutron has a negative charge.
(2) a proton has a negative charge.
(3) a neutron has no charge.
(4) a proton has no charge.

i think slash and

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the atomic number of carbon is six, which means that a carbon atom has six protons. carbon has three naturally occurring isotopes: carbon-12, carbon-13, and carbon-14. which of these statements are true about carbon and its isotopes? select all that appl