Give the noble gas configuration for an iron ion with a +3 charge. [Ar] 4d5
[Ar] 3d5
[Ar] 4s2, 3d3
[Ar] 4s2, 3d9

This is a mixture that has the same composition throughout.

Compare and contrast the bohr model and the electron cloud models of the atom.

If we compare and contrast electromagnetic waves with sound waves, all but one statement is true. that is a) sound waves require a medium to travel while electromagnetic waves do not. b) electromagnetic waves can travel through the vacuum of space while sound waves cannot. c) electromagnetic waves must have a medium in which to travel, but sound waves can travel anywhere. eliminate d) sound waves must bounce off of matter in order to travel while electromagnetic waves do not require matter to be present.