Beth made the chart shown. which headings best complete the chart? x: use dc y: use ac x: use ac y: use dc x: powered by current y: powered by magnetism x: powered by magnetism y: powered by current

what are the options? add them, then i will be glad to .

the atomic number of magnesium is 12. its nucleus must contain 12 protons and no electrons. the atomic number of an atom is determined by the number of protons.

magnesium is an electrolyte injection commonly used to treat low magnesium levels in your blood. it is also used to prevent or control seizures in women with preeclampsia or eclampsia.