Se6+ B. Se2+ C. Se6? D. Se2?
A metal atom gains electrons and a nonmetal atom loses electrons. C. A metal and a nonmetal atom lose electrons. D. A metal and a nonmetal atom gain electrons.
Add another beryllium atom. D. Add another chlorine atom.
1 B. 2 C. 3 D. 4
RbN B. RbN3 C. Rb3N D. Rb2N3