Pls help

Which atom or ion is the largest? a. k b. k+ c. ca d. ca2+ e. li

Using data from seismic waves, geologists have learned that earth’s interior is made up of several

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