True or False Chromium- 63 has 39 neutrons

Ageologist determines that a sample of a mineral can't be scratched by a steel nail but can be scratched by a masonry drill bit. based on this information, the sample mineral has to be softer than a. orthoclase. b. fluorite. c. apatite. d. corundum.

Tell me the iupac names of the following alcohols:

Identify the lewis base in this balanced equation: fe3+ h2o fe(h2o)63+