A.its nucleus goes from a higher energy state to a lower one
B.one of the orbital electrons jumps from a higher orbit to one of a lower energy
C.an orbital electron jumps from a lower orbit to a higher one
D.its nucleus goes from a lower energy state to a higher one
A.move round the nucleus at random
B.are embedded in space around the nucleus
C.are distributed as three dimensional charge clouds around the nucleus
D.are stationary in various energy levels
A.electrical energy
B.thermal energy
C.kinetic energy
D.potential energy
A.2 electrons in the outermost orbit
B.two protons in the nucleus
C.two neutrons in the nucleus
D.one proton and one neutron in the nucleus
A.99.29%
B.0.71%
C.10%
D.0.10%
A.isotones
B.isobars
C.isotopes
D.isosteres
A.is positively charged
B.is negatively charged
C.has no charge
A.e p n a
B.n p e a
C.n p a e
D.n a p e
A.mass number
B.number of neutrons
C.atomic weight
D.electronic configuration
