What is the electron configuration for the Fe3+ ion?
A) Ar4s13d6
B) Ar4s03d7
C) Ar4s03d5
D) Ar4s23d9
E) Ne3s23p10
Question 2
A mixture of two gases was allowed to effuse from a container. One of the gases escaped from the container 1.43 times as fast as the other one. The two gases could have been ________.
A) CO and SF6
B) O2 and Cl2
C) CO and CO2
D) Cl2 and SF6
E) O2 and SF6