Chapter 8 Chemistry test
Which of the following is the weakest: Hydrogen bond, Polar covalent bond, Dipole interaction, Ionic Bond
Dipole interaction
Which of the following contains a polar covalent bond
HF
Which of these elements does not exist as a diatomic molecule?: I, F, H, He
He
Which one of the following compounds is not Covalent: SCl2, KCl, Hal, S2Cl2
KCl
Which of the following compounds is not ionic: NaI, CO2, CaCl2, Na2O
CO2
A diatomic molecule with a triple covalent bond is: N2, H2, Br2, O2
N2
The covalent molecule among the following is: NaCl, CaO, NH3, KF
NH3
Which of the following molecules ha sone unshared pair of electrons: CH4, HCl, H2O, NH3
NH3
In forming the molecule HF, the F atom strains the electron configuration of:
Ne
structural formula
a chemical formula that shows the arrangement of atoms in molecules and polyatomic ions
Coordinate covalent bond
a covalent bond between two atoms in which the shared electron pair comes from only one of the atoms
polar covalent bond
a covalent bond between two atoms of different electronegativities in which the bonding electrons are not shared equally
triple covalent bond
a covalent bond in which three pairs of electrons are shared by two bonded atoms
double covalent bond
a covalent bond involving two pairs of electrons
molecular compound
an electrically neutral group of atoms joined together by covalent bonds
reduction
complete or partial gain of electrons
oxidation
complete or partial loss of electrons
hydrogen bond
force that occurs when a hydrogen atom that is covalently bonded to a very electronegative atom is also weakly bonded to an unshared pair of electrons in the same or nearby molecule
dispersion force
interaction caused by the motion of electrons the weakest attractions that exist between molecules
The melting and boiling points of most molecular compounds are
lower than those of most ionic compounds
molecular formula
shows the kinds and numbers present in a molecule of a compound
In Cl2, what is the total number of unshared pairs of electrons?
6
How many valence electrons does an atom of any halogen have
7
Nonpolar covalent bond
A covalent bond formed by the equal sharing of bonding electrons by two atoms
Atoms share electrons in order to acquire the electron configurations of...
Noble Gases
