[Pirroshan]

 Hello,

 I'm making a Program that will generate a lewis dot structure and I was wondering if their was some kind of pattern with lewis dot structures that will help me develop my algorithm. Like we all know the total number of V Electrons cannot be a odd number and cannot be < 8 duo to the octet rule. I was wondering if their was anymore.

[sjb]

Hello,

 I'm making a Program that will generate a lewis dot structure and I was wondering if their was some kind of pattern with lewis dot structures that will help me develop my algorithm. Like we all know the total number of V Electrons cannot be a odd number and cannot be < 8 duo to the octet rule. I was wondering if their was anymore.

Not really, and probably even these rules can be broken, see e.g. nitrogen dioxide and things like perchlorates, or boranes

[ramboacid]

I read that generally the least electronegative atom in a structure (excluding hydrogen) is the central atom, though I suspect this rule is easily broken too.

If the program will try handling hypervalent compounds then you could try making use of oxidation states in your algorithm as well.

[AWK]

What about: HOCN, HONC, HNCO, HCNO?

[juanrga]

I read that generally the least electronegative atom in a structure (excluding hydrogen) is the central atom, though I suspect this rule is easily broken too.

Effectively, the central atom in ClO₂ is the Cl, but the central atom in Cl₂O is the O, even when Cl is the most electronegative.

A more useful rule is that the central atom is usually the unique atom.