What's the molar mass of Br2

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

Which best explains why an iceberg floats?

An atom of which element reacts with an atom of hydrogen to form a bond with the greatest degree of polarity ?