How much .05 m hcl solution can be made by diluting 250 ml of 10 m hcl

Which of the following statements is true? a. elements in the last period are radioactive. b. atomic weight is the same as atomic mass. c. elements in the same group have the same number of electron shells. d. atomic number equals the number of neutrons in the nucleus of an atom.

What are the first three quantum numbers for the electrons located in subshell 2s?

Which type of intermolecular force is pbr3