Phosphorus is in the same group of the Periodic Table as nitrogen. A molecule of PH, reacts with an H ion to form a PH, ion. Name the type of bond formed when PH, reacts with Hi and explain how this bond is formed.

Asample of hydrated tin (ii) chloride (sncl2) has a mass of 4.90 g. when it is dehydrated, it has a mass of 4.10 g. which is the correct chemical formula for the hydrate? sncl2•2h2o          sncl2•4h2o          sncl2•6h2o