Portland State University - - Professor Carl C. Wamser

Chemistry 331 - Fall 1997

Pre-Quiz, Chapter 1

(1 point each)

1. You can tell from its position in the Periodic Table that nitrogen has a total of

___7___ electrons, of which ___5___ are valence electrons.

 

2. The most electronegative element is ___fluorine (F)_____ .

 

3. The types of hybrid orbitals used to make covalent bonds of carbon are :

sp3, sp2, sp

 

4. Give an example of a functional group by name and by structure.

alcohol (or hydroxy group) ROH

ether ROR

carbonyl group C=O

aldehyde RCHO

ketone R2CO

carboxyl group RCOOH

(lots of other possibilities)

 

5. CH5 would be considered an impossible (or very unstable) compound because

it violates the octet rule - there are a total of nine valence electrons and no good place to put them all.