Select the correct electron configuration for vanadium. (atomic number 23)

1s 2 2s 6 2p 3 3s 2 3p 4 4s 2 3d 5
1s 2 2s 2 2p 6 3s 2 3p 8 4s 2 3d 1
1s 2 2s 2 2p 6 3s 2 3p 6 4s 2 3d 3
1s 2 2s 2 2p 5 3s 2 3p 7 4s 1 3d 4

This classification of drug typically changes the brain's chemistry and reduces its ability to create its own endorphins.

Measurements that have similar values are: a. usually accurate b. sometimes accurate c. always accurate d. never accurate

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.