chem

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

0.1.

mono

1

a polar covalent bond is most likely to form between two elements that have a diffference in electronegativity values of

1.5.

deca

10

fige basic steps in drawing a lewis structure

1: draw a lewis structure for each atom in the compound 2: determine the total number of valence electrons in the compond 3: arrange the lewis structure to show how the atoms bond in the molecule 4: distribute the electron dots so that each atom, except for hydrogen and boron, satisfies the octet rule 5: change each pair of dots that represents a shared pair of electrons to a long dash 6: count the number of electrons surrounding each atom

di

2

tri

3

an ionic bond is most likely to form between two elements that have a diffference in electronegativity values of

3.0.

tetra

4

penta

5

hexa

6

hepta

7

octa

8

nona

9

which of the following substances has the lowest boiling point?

Cl2

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

Cl2

which of the following compounds most likely has the least bond energy?

I2; I-I bond length = 266 pm

how many different kinds of covalent bonds can a nitrogen atom form

a nitrogen atom has five valence electrons. to have a complete octet of electrons, the nitrogen atom forms three covalent bonds. it could form three single bonds, one single and one double bond, or one triple bond

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

at a minimum

why do most atoms form chemical bonds

atoms form chemical bonds to establish a more stable electron arrangement. As independent particles, they have large potential energies. By bonding, they deserve their potential energy, thus becoming more stable

according to VSEPR theory, the molecular shale of H2O is classified as

bent

the chemical bond formed when two atoms share one electron is a

covalent bond

to indicate resonance, a _____ is placed between a molecule's resonance structures

double-headed row

which of the following number of atoms can form a tetrahedral molecule

five

explain how it is possible for a binary compound between between fluorine and iodine to form, and describe the kind of bond formed in such a reaction

fluorine and iodine can form a binary conpound because fluorine has such a strong attraction for electrons that it can attract one of iodine's electrons to form a covalent bond. the bond formed in such a case is polar covalent because the difference in electronegativity between two atoms 1.3

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

if two covalently bonded atoms move farther 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

according to VSEPR theory, which of the following shapes is possible for a molecule with the molecular formula of AB2

linear and bent

according to VSEPR theory, which of the following shapes is possible for a molecule with the molecular formula of AB3

linear and trigonal pyramid

according to the VSEPR theory, a molecule with the molecular formula of A2 is

linear in shape

the correct lewis structure for a molecule of the compound C2H2 contains

one triple bond

Iodine monochlorife, ICI, has a higher boiling point than bromine, Br2, partly because ICI is a(n)

polar molecular substance

explain why scientists use resonance structures to represent some molecules

resonance structures picture the bonding in molecules that cannot be correctly pictured with a single lewis structure.

the correct lewis structure for the boron atom has

three single valence electrons

the correct lewis structure for a fluorine atom in a molecule of F2 shows

three unshared pairs of electrons, an octet of valence electrons, one shared pait of electrons

the correct lewis structure for the boron atom has

two pairs of valence electrons and two single valence electrons

the correct lewis structure for the oxygen atom has

two pairs of valence electrons and two single valence electrons

The electrons involved in the formation of a covalent bond are

valence electrons