In the coordination
compound[cr(nh3)(en)2cl]br2,
thecoordination number (c. n.) and oxidation number (o. n.) of the
metalatom are, respectively,
a. c. n. = 6; o. n. = +4.
b. c. n. = 6; o. n. = +3.
c. c. n. = 5; o. n. = +2.
d. c. n. = 4; o. n. = +2.
e. c. n. = 4; o. n. = +3.

What is the relation between concentration of reactants and the rate of chemical reaction?

Describe the interaction that occurs between two objects with the same electrical charge.

Which are examples of how technology has advanced scientific understanding.1using hot water to sterilize medical equipment.2transplanting a human organ into another individual.3inserting genes from one sheep into another cell to make a cloneunderstanding the different structures that make up a cell.4examining microorganisms from the deepest parts of the ocean