Answer:
Na+ is positively charged as it loses an electron
Cl- is negatively charged as it gains an electron
H ( hydrogen ) is the answer I believe.
B. They may be gases, liquids, or solids at room temp.
The uranium within these items is radioactive and should be treated with care. Uranium's most stable isotope, uranium-238, has a half-life of about 4,468,000,000 years. It decays into thorium-234 through alpha decay or decays through spontaneous fission.
1.54 x 10^-10 (ten to the negative tenth power)