Ionic compounds are generally crystalline solids with high melting points. water (h2o) is at room temperature and both carbon dioxide (co2) and nitrous oxide (n2o) are at room temperature.

Consider the nuclear equation below. 239/94 pu—-> x+ 4/2 he. what is x?

Phosphorous can form an ion called phosphide, which has the formula p3−. this ion can form an ion called phosphide, which has the formula p3−. this ion properties very similar to those of pforms when a phosphorus atom loses three protonsis called a cationcontains 18 electrons

Which of the following is in the lanthanide family? a) uranium b) promethium c) silver d) gold