A monatomic ion with a charge of 2 has an electronic configuration of 1s22s22p6. This ion is a(n) . What is the chemical symbol of the noble gas this ion is isoelectronic with

What must happen before a body cell can begin mitotic cell division

Silver tarnishes as silver metal reacts with hydrogen sulfide, h2s, in the air. in this reaction, dark silver sulfide, au2s, covers the surface of silver. when silver is polished, this coating of silver sulfide can be removed from the surface. this makes the silver shiny again. enter the coefficients that balance the tarnishing reaction equation. (type 1 for no coefficient.)

0.2348 grams of pbcl2 used to form 44.0 ml of solution.