Atoms of main-group elements form ions so that the number of electrons in the outermost energy levels of each ion is?

The difference between the atomic number of an element and the element’s atomic mass is the number of ions.

Suppose the universe were completely empty except for one object-a solid sphere moving through space of 100 km/s. what sort of path would the object be moving in? explain your answer

Asolid that forms and separates from a liquid mixture is called