explain how the periodic law relates to the number of valence electrons in each family. be sure to state the periodic law.

When determining the shape of a molecule, it is important to draw a lewis dot structure first in order to see the total number a. electrons within the moleculeb. bonding and unshared pairs around central atomc. unshared pair within the molecule( i really need it )

What happened in 2012 and how does it illustrate the importance of understanding the sun and how it works?

Calculate the number of molecules present in 0.750 mol of mgo.