Chemistry test review
how many single covalent bonds can halogens form?
1
Multiple covalent bonds consist of which of these?
1 sigma bond and 1 or 2 pi bonds
which combination of bonds is present in tho molecule?
1 sigma bond and 1 pi bond
what is the electronegativity difference in the compound Aluminum Chloride AlCl₃
1.55
which type of bond has an electronegativity difference greater than 1.7?
16
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 single covalent bonds are elements in Column F likely to form?
2
how many valence electrons are available in the ion NO₃⁻
24
in the compound PCL₃, how many total valence electrons are present?
26
how many total shared electron pairs are in a molecule that displays sp² hybridization?
3
How many single covalent bonds can carbon form?
4
which is NOT a diatomic molecule?
6
which of the following compounds is an exception to the octet rule?
BH₃
which is the correct formula for the compound phosphoric acid?
H₃PO₄
which is the correct formula for the compound dinitrogen monoxide?
N₂O
which is the formula for the compound sulfur hexachloride?
SCl₆
which covalent molecule has the strongest bond?
b
how many pairs of bonding electrons are present in a molecule that displays trigonal bipyramidal molecular shape?
bromine
which of the four diagrams show two atoms forming a covalent bond
c
which exception to the octet rule is shown by this molecule
coordinate covalent bond
identify the correct structure of NO₃⁻
d
which is the correct name for the compound N₂0₄
dinitrogen tetroxide
which is the correct name for the compound N₂O₃
dinitrogen trioxide
a diatomic molecule is one that is made of only 2 different elements
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 1s² 2s² 2p⁴, forms a single bond with another oxygen atom
false
electron affinity and electronegativity are opposite of one another
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 non polar, as the central atoms, O and C, respectively , are sp³ hybridized
false
what is the correct name for the compound HClO₃
hydrochloric acid
which is the correct name for the compound PCL₅
monophosphorus tetrachloride
which is the correct name for the compound HNO₂?
nitrous acid
based on its electronegativity difference, which kind of bond is present in the compound OF₂
polar covalent
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
suboctet
name the acid with following chemical formula
sulfuric acid
what molecular shape does the compound Ccl₄ have?
tetrahedral
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
which type of molecular shape is shown by this molecule
trigonal bipryamidal
which type of molecular shape is shown by this model?
trigonal planar
a sigma bond is formed between 2 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 1 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
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
