2. Form bonds: Click Add metal to add another lithium atom, and then transfer electrons from the lithium to the oxygen. Click Check. A. Did you make a stable compound? B. Turn on Show formula. What is the formula of this compound? C. Turn on Show charge. What is the charge of each ion? Li Li O

Answerchemical energy;

It's potassium i believe

Vander waals forces are inter molecular bonds that exist within molecules of the same substance. a water molecule is made up of oxygen and hydrogen atoms which share electrons between each other. the vander waals forces are forces that exist between multitude of different  molecules of water. dipole dipole forces is the type of vander waals force that exist in water. the oxygen atom which is more electronegative pulls the shared electron closer to itself thus generating a partial negative charge while the hydrogen acquire a partial positive charge. these two different charges causes attraction to occur in water molecules.

The correct answer is:   [a]:   the "stratosphere" .