Which of the following quantum number combinations is not allowed in an atom?
n = 2, l = 0, m subscript l = 0
n = 3, l = 2, m subscript l = -1
n = 6, l = 5, m subscript l = -4
n = 1, l = 0, m subscript l = 1

Check the correct box to describe the periodic trends in electronegativity. electronegativity across a period: decreases. increases. electronegativity down a group: decreases. increases.

Will give ! what are the advantages and disadvantages of nuclear power? check all that apply. one advantage of nuclear energy is that it does not produce carbon dioxide emissions. storage of nuclear waste is a short-term problem associated with nuclear energy. the problem with uranium mining is that a large quantity of uranium must be extracted to meet energy needs because the energy release from uranium fission is so low. safe operation of a nuclear power plant can be jeopardized by a human mistake.

The fact that the total amount of energy in a system remains constant is a(n)