Which represents the correct electron distribution of a transition element in the ground state?

a) 2-8-8-1
b) 2-8-8-2
c) 2-8-18-2
d) 2-8-18-3

To prevent the presence of air, noble gases are placed over highly reactive chemicals to act as inert "blanketing" gases. a chemical engineer places a mixture of noble gases consisting of 4.37 g of he, 13.36 g of ne, and 36.65 g of kr in a piston-cylinder assembly at stp. calculate the partial pressure in torr of kr.