The most common of these mathematical constants, which is typically given as approximately plus or minus 1.75, can be found using Benson’s formula. For 10 points each:
[10h] Name these constants, which can be used to calculate the electric potential of a point charge given the position of all other point charges.
ANSWER: Madelung constants
[10e] 1.75 is the magnitude of the Madelung constant for this common compound, whose mineral form is halite.
ANSWER: rock salt [or NaCl; or sodium chloride]
[10m] Madelung constants are used to calculate changes in this quantity in an equation named for Alfred Landé and Max Born. This quantity is inversely proportional to ionic radii in the Kapustinskii equation.
ANSWER: lattice energy [or lattice enthalpy; prompt on energy or enthalpy]
<Benjamin McAvoy-Bickford, Chemistry>