Chemistry Study Guide

Term
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In the molecule compounds the weak attraction forces are known as __, or van der Waals forces
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Terms in this set (19)
In the molecule compounds the weak attraction forces are known as __, or van der Waals forces
intermolecular forces
Hybridization occurs when__things are combined and the result has characteristics of both
two
If two atoms have a electronegativity difference greater than 1.7, what type of bond are they likely to form?
mostly ionic
Electron pairs are located in a molecule as __ as they can be
far apart
CH4 has ______ of electrons shared with the central Al atom. The bonding electrons have a bond angle of ________________ . The shape is _____________
four pairs, 109.5, tetrahedral
AlCl3 has ____________ of electrons shared with the central Al atom. The bonding electrons have a bond angle of ________________ . The shape is _____________.
three pairs, 120, triangle planar
Covalent bonds between atoms are strong, _______________________________________
but attraction forces between molecules are weak
What type of bond will form between identical atoms with an electronegativity balance of zero?
nonpolar covalent
When a polar bond forms, the shared electron pair or pairs are pulled toward one of the atoms. The electrons spend ________________ around that atom than the other atom.
more time
_____________ pairs also determine the shape of a molecule
Unshared electron
The force between two oppositely charged ends of two polar molecules is a ___________ force. The more polar the molecule, the stronger the dipole-dipole force.dipole-dipoleWhich of the following best describes van der Waals forces?weak intermolecular forces between moleculesUnequal sharing of electrons results in a ___________polar covalent bondA _____________ bond is an especially strong dipole-dipole force between a hydrogen end of one dipole and fluorine, oxygen, or nitrogen atom on another dipolehydrogenElectron pairs ____________each other and causes molecules to be in fixed positions relative to each otherrepelBeCl2 has ____________ of electrons shared with the central Be atom. The bonding electrons have maximum separation and a bond angle of ________________ . The shape is _____________.two pairs, 180, linearIf electrons come from two different atomic orbitals, such as a p or s, they must rearrange or combine into a ___________with the same shape and energy levelhybrid orbitalC - Cl bonds are symmetrical in CCl4. Electric charge measured at any distance from the center is identical on all sides. Partial charges are balanced and are thus ____________.nonpolarO-H bonds are asymmetric in water. There is a definite positive end and a definite negative end. Thus__________________polar