Match the orbitals below with their kind and identify their shapes. Put letters in alphabetical order. If none are correct leave the box blank. 1.s orbital s orbitals have a 2. p orbital p orbitals have a 3.d orbital d orbitals have a shape. shape. shape.

Which one of the statements about electrons and atoms is now considered INCORRECT? Select one: a. Electrons are best described as standing waves oscillating in the space around the nucleus. b. Electrons have well-defined mass and charge, but their exact position is uncertain. c. Electrons circle the nucleus in elliptical orbits determined by the atom’s nuclear charge. d. In each energy level above n=1, there are multiple regions of space an electron can occupy. e. Two electrons can be paired in the same orbital as long as they have opposite spins.

Use orbital diagrams to show the distribution of electrons in the orbital of: a. the 5p sublevel of iodine. b. the 3d sublevel of iron. c. the 4s sublevel of potassium. d.the 3s and 3p sublevel of silicon.

Which of the following statements is true regarding the energy of an electron in an atom? Select one: a. The energy of an electron in an atom can only take on certain discreet values. b. The energy of an electron in an atom can take on any value from zero to negative infinity. c. The energy of an electron in an atom can take on any value from zero to infinity.