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A typical characteristic of an iconic compound is

The ionic compound has a high melting point.

What is shown by the structural formula of a molecule or polyatomic ion?

the arrangement of bonded atoms

How do atoms achieve noble-gas electron configurations in single covalent bonds?

Two atoms share two electrons

Why do atoms share electrons in covalent bonds?

to attain a noble-gas electron configuration

Which of the following elements can form diatomic molecules held together by triple covalent bonds?

nitrogen

Which noble gas has the same electron configuration as the oxygen in a water molecule?

neon

Which elements can form diatomic molecules joined by a single covalent bond?

hydrogen and the halogens only

Which of the following is the name given to the pairs of valence electrons that do not participate in bonding in diatomic oxygen molecules?

unshared pair

The mixing of several atomic orbitals to form the same number of equivalent hybrid orbitals

hybridization

two or more valid electron dot formulas that can be written for the same molecule

resonance structures

a chemical formula that shows the arrangement of atoms in molecules and polyatomic ions

structural formula

the weakest attractions that exist between molecules

van der Waals forces

Because electron pairs repel, molecules adjust their shapes so that the valence-electron pairs are as far apart as possible.

VSEPR theory

a covalent bond in which one pair of electrons is shared between two atoms

single covalent bond

a molecule in which one end is slightly negative and the other end is slightly positive

polar molecule

a covalent bond formed between two diferent atoms in which the bonding electrons are shared unequally

polar covalent bond

an electrically neutral group of atoms joined together by covalent bonds

molecular compound

a covalent bond in which one atom contributes both bonding electrons

coordinate covalent bond

Resolance structures can be considered

hybrids

When two atomic orbitals combine to form a molecular orbital that is symmetrical along the axis connecting the two atomic nuclei, the bond that is produced is referred to as a/an

sigma bond

The shape of a molecule of NH3 is said to be

pyramidal

In a methane (CH4) molecule, the mixing of one 2s orbital with three 2p orbitals forms

four sp3 hybrid orbitals

The overlap of atomic s orbitals produces a(n)

sigma bond

What type of bond would be expected in a molecule of LiF?

ionic bond

When placed between oppositely charged metal plates, the region of a water molecule attracted to the negative plate is the

hydrogen region of the molecule

What is thought to cause the dispersion forces?

motion of electrons

Which of the forces of molecular attraction is the weakest?

dispersion

What causes dipole interactions?

attraction between polar molecules

What are the weakest attractions between molecules?

Van der Waals forces

What causes hydrogen bonding?

bonding of a covalently bonded hydrogen atom with an unshared electron pair

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