Chemistry

Which statement is true about a molecule of H2?

(A and B) Each atom has an electron configuartion like that of helium and it is less than either of the hydrogen atoms by itself

A nonpolar covalent bond is most likely to form between two elements that have a difference in electronegativity values of

0.1

A polar covalent bond is most likely to form between two elements that have a difference in electronegativity

1.5

An ionic bonds is most likely to form between two elements that have a difference in electronegativity values

3.0

To draw the Lewis structure of the polyatomic ion, NO3-1 you would have to those in the structures of N, O, O, and O.

Add on electron to

To draw the Lewis structure of the polyatomic ion, ClO-3 you would have to _____ those in teh structures of Cl, O, O, and O.

Add one electron to

A covalent bond forms when the attraction between two atoms is balanced by repulsion and the potential energy is

At a minimum

The Lewis structure of which of the following compounds does not follow the octet rule?

BF3

According to VSEPR theory, the molecular shape of H2O is classified as

Bent

Which of the following molecules is nonpolar?

C2H4

Which of the following substances most likely has the lowest boiling point?

Cl2

Which of the following number of atoms can form a tetrahedral molecule?

Five

In a double bond, two atoms share a total of ____ electrons.

Four

The correct Lewis structure for a Group 18 atom has

Four pairs of valence electrons

The bond between which pair of elements listed in the table below will most likely have the least ionic number?

H and Cl

Which of the following molecular formulas show the polar nature of the HBr molecule?

H+Br-

Which of the following compounds most likely has teh least bond energy?

I2; I-I bond length = 266pm

If two covalently bonded atoms move closer than a distance of the bond length, the potential energy of the atoms

Increases

According to VSEPR theory, the molecular shape of CO2 is classified as

Linear

Which compound's name includes the numerical prefixes di- and tri-?

N2O3

The substances whose Lewis structure shows three single covalent bonds is

NH3

How many double bonds are in the Lewis structure for hydrogen fluoride, HF?

None

The correct Lewis structure for a single fluorine atom in a molecule of F2 shows

One shared pair of electrons, three unshared pairs of electrons, and an octet of valence electrons (All of the above)

The correct Lewis structure for a molecule of the compound C2H2 contains

One triple bond

Iodine monochloride (ICl) has a higher boiling point than bromine (Br2) partly because iodine monochloride is a(n)

Polar molecular substance

Bond energy is the energy

Required to break one mile of similar bonds in a compound

To draw a Lewis structure, it is not necessary to know

The length of the bonds

The correct Lewis structure for the boron atom has

Three single valence electrons

A single covalent bond involves the sharing of

Two Electrons

In a double covalent bond

Two atoms share two pairs of electrons

The correct Lewis structure for the oxygen atom has

Two pairs of Valence electrons and 2 single valence electrons

The Lewis structure that represents an atom in Group 16 of the periodic table has

Two pairs of valence electrons and two single valence electrons

Which of the following atoms should be placed at the center of the Lewis structure of the compound ClF2HC?

c

The chemical bond formed when two atoms share one or more pairs of electrons

covalent bond

Nonpolar covalent bonds are not common because

one atom usually attracts electrons more strongly than the other

Bond length between two bonded atoms is

the separation at which their potential energy is minimum

The electrons included in the formation of a covalent bond are

valence electrons