ACS Gen Chem 1 Exam Questions With Complete Solutions Graded A+

Ion - A species of an element in which the number of electrons does not equal the number of protons. Isotope - Each isotope of an atom has a different number of neutrons. Isoelectric - Two atoms with the same charge. Isotopic - Two atoms with the same number of neutrons. Transition Metal Orbitals - The 4s orbital is filled before the 3d orbital, but listed after. Paramagnetic - Atoms that possess a permanent magnetic charge due to the presence of unpaired electrons. Electropositive - Tending to lose electrons and form positive ions. Tetrahedral Bond Angle - 109.5° Resonance Structures - Two equally correct arrangements of one molecule's electrons; generally the molecule exists as an average of the two. Polar Molecule - A molecule that is mostly positive on one side and mostly negative on the other. sp³ Orbital - An orbital composed of one s orbital and three p orbitals; can hold eight total electrons. Tetrahedral.Trigonal Planar - The way that three objects will arrange themselves around a central atom. Nonpolar.