If a molecule has two electron pairs, both of which are shared,
which of the following molecular geometries will it have?
a
Linear
b
Planar
C Bent
d Tetrahedral

What happens to isotopes that are unstable?

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

How might this scientific phenomena be explained? a paper clip floats on water.