3. Many transition metals can form more than one simple positive ion. For example, iron forms both Fet2 and Fe*3 ions, and tin forms both Sn*2 and
Sn4 ions. Which is the smaller ion of each pair, and why?

Hairy thick gross thing? idk

Is there a picture or answer choices?

Following are the  advantages of the parametric equations: 1) they can be used to graph curves that are not functions, like the unit circle.2) the parameter can be used to represent the quantity that is  useful to  provide us with better information about the graph.3)  it is useful to convert between rectangular equations and parametric equations.with specific reference to chemistry,  parametric equations are employ for solving hydrogen and hydrogen-like ions, quantum mechanically. herein, cartesian coordinates are converted in spherical polar coordinates. the solution obtained, when plotted on spherical polar graph paper, provides visualization of atomic orbital such as s,p,d and f.