# What is the Lewis Dot Structure of ClO_3^(-)?

Jul 5, 2016

Chlorate is trigonal pyramidal.

#### Explanation:

There are $3 \times 6 + 7 + 1 = 26 \text{ electrons to distibute over 4 centres.}$

$O = C {l}^{+} {\left(- {O}^{-}\right)}_{2}$.

There is a formal lone pair of electrons on $C l$. Counting up the electrons around chlorine, there are 6, rather than the 7 required for neutrality, so it bears a formal positive charge. The doubly bound oxygen is neutral. The 2 singly bound oxygens bear formal negative charges. Clearly, the oxygen atoms are equivalent by resonance.

What is the charge on this representation. Is is consistent?