Register

Quadrivalent

Definition: Having a valence of four; capable of combining with,
being replaced by, or compared with, four monad atoms; tetravalent; --
said of certain atoms and radicals; thus, carbon and silicon are
quadrivalent elements.

Are you looking

Are you looking for "emergency locksmith"? Check out keys247 The passionate experts in this field are ready to answer all of your requests.
A website like www.firstcallmotorbreakdown.co.uk will provide you with the highest quality in the industry.

In case you're interested in knowing more info on HEAD PHONES, stop by shopemalls.com