The symbol for the hydroxide ion is h + h 3o - h(oh) oh -

Write the chemical symbols for three different atoms or atomic cations with 27 electrons. asap!

Which substances have the lowest melting points: ionic covalent, or metallic

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