What happens when an electron in a hydrogen atom moves from the excited state to the ground state?
a
Continuous amounts of energy are released.
b A photon is emitted.
C A quantum of energy is absorbed.
d
A different electron moves from the ground state to
the excited state at the same time.

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.