“Pre-”: The Prefix of Prefixes

• prefix: morpheme fastened ‘before’ a root of a word.
• prevent: come ‘before’
• precise: cut ‘before’
• prejudice: judge ‘before’
• preview: see ‘before’
• predict: say ‘before’
• prepare: get ready ‘before’
• precaution: a being cautious ‘beforehand’

• preach.
• preact.
• preamp.
• prearm.
• prebid.
• prebuy.
• precip.
• precis.

1a(1) : earlier than : prior to : before Precambrian prehistoric. (2) : preparatory or prerequisite to premedical. b : in advance : beforehand precancel prepay. 2 : in front of : anterior to preaxial premolar.

Types of nomenclature

• Substitutive name.
• Functional class name, also known as a radicofunctional name.
• Conjunctive name.
• Additive name.
• Subtractive name.
• Multiplicative name.
• Fusion name.
• Hantzsch–Widman name.

An example of nomenclature is the language of sculpture. The system or set of names used in a specific branch of learning or activity, as in biology for plants and animals, or for the parts of a particular mechanism. A system of names used in an art or science.

Organic Compounds Follow a Similar Naming Pattern

1. Prefix = substituent.
2. First Name = carbon chain number.
3. Last Name = type of chain.
4. Suffix = highest priority functional group.

Boric acid | H3BO3 – PubChem.

10.2 – Describe structural isomers as compounds with the same molecualr formula but with different arrangements of atoms….To find the name out:

1. Look for the longest chain. In this case 3 Carbons in a row.
2. Number of Carbons.
3. Look at the second Carbon (2) there is a methyl group.
4. So it becomes 2-methyl propane.

From Wikipedia Iodine trichloride is an interhalogen compound of iodine and chlorine. It is bright yellow and in the solid state is present as a planar dimer , , with two bridging atoms.

Antimony pentachloride

Antimony pentachloride is used as a polymerization catalyst and for the chlorination of organic compounds.

Drawing the Lewis Structure for SCl Note that Sulfur is the least electronegative atom in the SCl2 Lewis structure and is therefore placed in the center. For the SCl2 Lewis structure we have a total of 20 valence electrons.

antimony trichloride