What is the scientific method webquest answers?

Which diagram shows the correct way to represent an ionic compound of magnesium oxide?

The bond energy for the van der waals bond between two helium atoms is 7.9×10−4ev. assuming that the average kinetic energy of a helium atom is (3/2)kbt, at what temperature is the average kinetic energy equal to the bond energy between two helium atoms

The number at the end of an isotope’s name is the number.