Of the following, Hf is not zero for ________. A) O2 (g) B) C ...

[Cooldude101]

Of the following, Hf is not zero for ________.
 
  A) O2 (g)
  B) C (graphite)
  C) N2 (g)
  D) F2 (s)
  E) Cl2 (g)

Question 2

Atomic radius generally increases as we move ________.
 
  A) down a group and from right to left across a period
  B) up a group and from left to right across a period
  C) down a group and from left to right across a period
  D) up a group and from right to left across a period
  E) down a group; the period position has no effect

[Fayaz00962]

Answer to Question 1

D

Answer to Question 2

A

[Cooldude101]

Wow, this really help

[jomama]

Great answer, keep it coming