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