The analogy that forms the basis of the octet rule compares covalent valence electron arrangements to:

a. sigma and pi bonds.

b. orbital overlap electron densities.

c. noble gas electron configurations.

d. the hydrogen molecule.

As you move from right to left on the periodic table the atomic radius fill in the blank

Which compound contain an iron with a 3+ charge

Imagine that twenty i.u.’s of enzyme z were catalyzing the above reaction for one minute, under vmaxconditions, in a 3.00 ml assay volume. the assay is buffered with 20 mm phosphate buffer, ph 7.60. what will the ph be at the end of that one minute?