What must be known for the rate constant to be calculated from the rate law? O A. The reaction rate at known reactant concentrations
O B. The activation energy the reaction must overcome
C. The temperature at the beginning of the reaction
D. The reaction rate at known product concentrations

plasma is the state of matter where the substance is ionized and has no definite shape or volume. the fact of being ionized makes the substance a good electrical conductor.

atomic mass = 39

number of neutrons = 20

number of protons= 19

electronic configuration = 1s2 2s2 2p6 3s2 3p6 4s1

the number of electron in first shell = 2

number of electrons in n=3 shell = 8