Which element is highly reactive, non metal, one energy level, will bond with itself, similar chemical properties as Rubidium?

Match the following items. 1. high-intensity bundle of energy being emitted from some decaying nuclei gamma ray 2. particle radiating from the nucleus of some atoms beta particle 3. negative particle identical to an electron but radiating from a decaying nucleus alpha particle

How can one make a supersaturated solution? (apex)

What must be in balance for temperatures to remain constant?