#10 Which of the following statements is true? a. Each set of d orbitals can hold a maximum of 14 electrons. b. All s orbitals are spherically shaped. c. The first energy level contains only s and p orbitals. d. Each set of d orbitals contains seven orbitals.
#12 The principle that states each electron occupies the lowest energy orbital available is the ______________. a. exclusion principle b. photoelectric principle c. uncertainty principle d. aufbau principle
#28 The Heisenberg uncertainty principle states that ____________. a. no two electrons in the same atom can have the same set of four quantum numbers b. two atoms of the same element must have the same number of protons c. electrons of atoms in their ground states enter energetically equivalent sets of orbitals singly before they pair up in any orbital of the set d. it is impossible to simultaneously know the precise position and velocity of a particle
#28 d. it is impossible to simultaneously know the precise position and velocity of a particle
#29 An element whose atoms have four valence electrons is _______. a. Sn b. Nb c. Ti d. Cr