ionic compounds have a metal and a non metal. If both calcium fluoride and iorn(ll) oxide are ionic, why are they named differently

8) a mixture of he, ne and ar has a pressure of 7.85 atm. if the ne has a mole fraction of 0.47 and 8) ar has a mole fraction of 0.23, what is the pressure of he? a) 4.2 atm b) 3.7 atm c) 5.5 atm d) 2.4 atm e) 1.8 atm

Which type of fossil does this image depict?

The element that has the greatest electronegativity is