# What structures are formed when water molecules surrounds individual ions?

May 22, 2018

#### Answer:

These are in effect coordination complexes....

#### Explanation:

Water is an exceptionally good solvent for aquating ions...

And so when an ionic salt reacts in solution to give such ions we write….

$M X \left(s\right) \rightarrow {\underbrace{{M}^{+} + {X}^{-}}}_{\text{i.e. the aquated ions}}$

And so when we write $N a C l \left(a q\right)$, we probably mean or assume ${\left[N a {\left(O {H}_{2}\right)}_{6}\right]}^{+}$..a sodium ion solvated by several water molecules...and the chloride ion probably interacts with the other end of the water dipole....