1. The most abundant from of phosphorous has 15 protos, 16 neutrons and 15 electrons. Which of the following is an isotope of pgisphorous? ( make all correct choices)

A. an atom with 16 protons, 16 neutrons, and 16 electrons

B. An atom with 15 protons, 17 neutrons, and 15 electrons

C. An atom with 17 protons , 17 neutrons and 15 electrons

D. An atom with 16 protons , 17 neautrons, and 16 electrons

E. An atom with 14 protons , 16 nueautrons and 14 electrons

2. Hydrogen ( h) has 1 electron; Carbon ( c) has 6 electrons, use the octet rule to determine which of the follwoing is most stable. Note: some of these may have double bonds.

A. O2

B. C2

C. CO5

D. CH2

E. C2H

3. Hydrogen ( H) has 1 electron, carbond ( c) has 6 electrons ; oxygen ( O)  has electrons, Nitrogen ( n) HAS 7 electrons. use the octet rule to determine which of the follwoing is most stable. Note: some of these may have double bonds.

A. CN

B. CH3NH2

C. N2H2

D. C3H

E. OH4

4. what pharse best describes oxidation- reduction reaction?

A. phosphoryrylation energezing endergounic reactions

b. transfering of electrons from one molecule to another

c. sharing electrons betweeen chemically bonded atoms

d. exergonic reactions linked to endergonic reactions

e. ionization