3. For each main-group element, what is the relationship between its group number and
the number of valence electrons that the group
members have?

Idon’t understand this page, can someone ?

You just calculated that the heat of fusion for chloromethane is 6400 j/mol. the heat of fusion for hydrogen is 120 j/mol.? which of the following account for this difference? more than one correcta. chloromethane can absorb more energy at the same temperature. b. hydrogen has stronger intermolecular forces than chloromethane. c. hydrogen molecules can pack more closely than chloromethane molecules. d. chloromethane experiences dipole-dipole interactions. e. chloromethane has a higher molar mass than hydrogen.

The plant food contains nh4)3po4 what tests would you run to verify the presence of the nh4 ion and the po4 ion