Simple Organic Chem Question?

Question

Just wondering about a couple prefixes in my homework. There is one referring to sec sec-butyl chloride. there is also t-amyl iodide and n-butyl bromide. Just wondering what those prefixes mean, I tried looking them up in the book but really didn't see anything. If someone could please answer what each of those prefixes mean it would be greatly appreciated.

Answer 1

Prefixes indicate normal, secondary & tertiary as Carborane rightly says.

Answer 2

t- means the carbon is tertiary
if you look the carbon atom bonded to iodide in t-amyl iodide, you will see 3 carbon atoms bonded to it, so it is tertiary

s- means the carbon is secondary
if you look the carbon atom bonded to chloride in s-butyl chlorde, you will see 2 carbon atoms bonded to it, so it is secondary

then there is iso- means the 2nd to the last carbon in the branch is secondary

n- normal, it is a straight chain
so you see in n-butyl bromide. the carbon bonded to bromide has a long chain carbon tag along, there is no branch in the chain.

Answer 3

the three C-H bonds and lone pair of eletrons drawn as followes 2 C-H bonds shown as horizantal bonds, thired bond shown as vertical bond from c atom, the c atom offered with a pire of electrons