Molecular and Ionic Bonding
What type of crystal structure is expected for calcium fluoride (CaF2), given calcium’s +2 charge and fluoride's -1 charge?
Zinc blende structure where cations fill half the tetrahedral sites within FCC anion framework.
Face-centered cubic lattice for Ca^+^ and simple cubic lattice for F^-^.
Fluorite structure where both cations and anions occupy face-centered cubic lattices.
Sodium chloride-like structure with alternating positions within a cubic close-packed array.
What impact would doping a sodium chloride crystal with calcium ions have on defect formation and electrical conductivity?
It introduces Schottky defects and marginally improves electrical conductivity.
Doping results solely in color centers while reducing electrical conductivity.
It creates Frenkel defects without affecting electrical conductivity.
There are no defects formed but electrical conductivity drastically increases.
Which of the following is the formula for the compound formed by aluminum and chlorine atoms?
AlCl₂
AlCl
AlCl₃
Al₃Cl
Which property is common to most ionic compounds at room temperature?
Solid state
Plasma state
Gaseous state
Liquid state
Considering lattice energy trends in ionic solids, which factor most directly contributes to a greater lattice energy?
Higher temperature
Smaller ion size
Increased molecular mass
Lower charge density
What type of bond is formed when one atom donates an electron to another atom, resulting in oppositely charged ions?
Covalent bond
Hydrogen bond
Ionic bond
Metallic bond
In which type of solid do ions organize into repeating patterns due to electrostatic attractions?
Molecular solids
Ionic solids
Metallic solids
Covalent-network solids

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Which element commonly forms divalent cations in ionic compounds?
Carbon (C^4+)
Magnesium (Mg^2+)
Hydrogen (H+)
Nitrogen (N^5+)
What type of geometrical arrangement can be observed around caesium ion (Cs+) in CsCl where each ion has eight nearest neighbours?
Tetrahedral arrangement
Cubic arrangement
Octahedral arrangement
Trigonal pyramidal arrangement
In a chemical equation, what are substances that appear on the right side called?
Reactants
Products
Intermediates
Catalysts