Molecular Structure and Bonding
What bond results when one of the two atoms furnishes both electrons?
Coordinate covalent bonds
What bond results when atoms each contribute an electron to a shared pair?
Covalent bonds
A compound consisting of an element having a low ionization energy and a second element having a high electron affinity is likely to have
ionic bonds
A simple method of showing experimentally that a solid substance may be ionic is to show that it
conducts current when dissolved in water
Which concept describes the formation of four equivalent, single, covalent bonds by carbon in its compounds that resemble methane, CH₄?
hybridization
Resonance structures describe molecules that have
multiple electron-dot formulas
what is true for both ionic and covalent compounds?
the depression of freezing point of water. Any nonvolatile solute that is dissolved in water depresses its freezing point.
Explain the relationship between bond size and bond length.
triple = shortest, double = medium, single = longest.
In regards to bond energy the photon relationship, what is the most effective way to disrupt bonds with photons and why?
High energy photons can break up covalent bonding. The less energy the bond has, the easier it is for a photon to break it apart while conserving the most amount of energy possible. Consider the Lewis structure as well.
What bond results when atoms exchange electrons?
Ionic bonds
What bond results when atoms free one or more valence electrons to the metal lattice?
Metallic bonds
What are some properties a molecular must have to be nonpolar with polar bonds?
Symmetry so that all bond dipoles cancel out. Study the shape of the lewis structures.
The fact that BCl₃ is a planar molecule while NCl₃ is pyramidal can be explained several different ways. which statement is the best rationalization?
The nitrogen atom in NCl₃ has a lone pair of electrons, whereas the boron atom in BCl₃ does not. (pay attention to the REASON)
According to the VSEPR model, the geometric structure of H2O is
bent at an angle of 104.5 because of the greater repulsion of two lone pairs relative to that of the bonding pairs.
