Which statement describes the chemical properties of a metal? metals tend to gain electrons and form cations. metals tend to gain electrons and form anions. metals tend to lose electrons in order to form anions. metals tend to lose electrons and form cations.

Metals tends to lose electrons to form cations

Because all metals(and all other elements as well) want to be like noble gases which have no charge.

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.