chemistry chapter 8
Which type of bond has one pair of electrons shared between atoms?
single covalent
Which exception to the octet rule is shown by this molecule?(CI Be CI)
suboctet
Name the acid with the following chemical formula: H2SO4
sulfuric acid
What molecular shape does the compound CCl4 have?
tetrahedral
ammonia
three single covalent bonds
Which type of molecular shape is shown by this molecule?(Y shaped 120 degree)
trigonal planar
water
two single covalent bonds
How many single covalent bonds can carbon form?
4
How many pairs of bonding electrons are present in a molecule that displays trigonal bipyramidal molecular shape?
5
Which covalent molecule has the strongest bond?
B
Which of the following compounds is an exception to the octet rule?
BH3
How many total shared electron pairs are in a molecule that displays sp2 hybridization?
3
How many bond pairs of electrons exist in a molecule of ammonia?
4
Fluorine belongs to group 17. How many covalent bonds are formed between two fluorine atoms?
1
How many single covalent bonds can halogens form?
1
Which combination of bonds is present in this molecule?(O=O)
1 sigma bond and 1 pi bond
A compound BeCl2 uses sp hybrid orbitals of Be atom. Which of the following is the correct bond angle in the compound?
180*
How many pi bonds are there in a triple covalent bond?
2
How many single covalent bonds are elements in Column F likely to form?
2
How many valence electrons are available in the ion NO3-?
24
Which is NOT a diatomic molecule?
Boron
Which of the four diagrams below show two atoms which are forming a covalent bond?
C
A diatomic molecule is one that is made of only two different elements.
False
A double bond occupies two hybrid orbitals.
False
All compounds with polar covalent bonds are polar molecules.
False
All noble gases have the same valence electron configuration.
False
All of the bond lengths in a compound having resonating structures are identical.
False
An expanded octet is possible using the p-orbital of an element.
False
An oxygen atom, having electron configuration 1s^2 2s^2 2p^4, forms a single bond with another oxygen atom.
False
Electron affinity and electronegativity are opposite of one another.
False
Electrons in a covalent bond are always shared equally between the two atoms forming the bond.
False
In a correct Lewis structure, no atom can have more than eight valence electrons surrounding it.
False
The bond angle for a molecule with sp3 hybridized atom is always 109.5°.
False
The molecules H2O and CCl4 are nonpolar, as the central atoms, O and C, respectively, are sp3 hybridized.
False
Which is the correct formula for the compound phosphoric acid?
H3PO3
Which is the correct formula for the compound dinitrogen monoxide?
N2O
Identify the correct structure of NO3 -
O l N / \ :O O: " "
Which is the formula for the compound sulfur hexachloride?
SCI6
Which is true of the bond length of these covalent molecules?
The bonds in A are longer than the bonds in B or C
Covalent compounds display which of these properties?
Their intermolecular forces are relatively weak.
A sigma bond is formed between two atoms when the valence atomic orbital of one atom overlaps end-to-end with that of the other atom.
True
An oxyacid is composed of a hydrogen atom bonded to a polyatomic anion that contains at least one oxygen atom.
True
Electron affinity is the likelihood of an atom to accept an electron.
True
Hybrid orbitals of an atom are identical and contain one electron pair each.
True
Hybrid orbitals result from the mixing of atomic orbitals to hold lone electron pairs and single electrons available for bonding.
True
In covalent compounds, atoms become chemically stable by sharing their valence electrons.
True
Noble gases are generally non-reactive because they already have a complete valence shell.
True
The breaking of covalent bonds requires the input of energy.
True
The name of an oxyacid has the suffix -ic acid. What is the suffix of the oxyanion?
ate
Which exception to the octet rule is shown by this molecule?(H F H N B F H F)
coordinate covalent bond
Which is the correct name for the compound N2O4?
dinitrogen tetroxide
Which is the correct name for the compound N2O3?
dinitrogen trioxide
methane
four single covalent bonds
Which type of bond has an electronegativity difference greater than 1.7?
ionic
Which is the correct name for the compound HNO2?
nitrous acid
Which is the correct name for the compound PCl5?
phosphorus pentachloride
Based on its electronegativity difference, which kind of bond is present in the compound OF2?
polar covalent
