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WorksheetsCovalent Test
Total questions: 21
Worksheet time: 15mins
In a triple bond, two atoms share a total of ___ electrons.
two
three
four
six
Which of the following compounds has the least bond energy?
bond length= 199 pm
bond length= 227 pm
bond length= 192 pm
bond length= 166 pm
The electrons involved in the formation of a covalent bond are
transferred from one atom to another.
valence electrons.
found only in s-orbitals.
in filled orbitals.
In which pair do both compounds exhibit predominantly covalent bonding?
KI and O3
SCl6 and HF
LiF and K2O
LiBr and Se2O
Two atoms that have the same or very close electronegativities are expected to form
no bonds
polar covalent bonds
nonpolar covalent bonds
ionic bonds
Chose the molecule with the strongest bond.
HF
HCl
HBr
HI
Choose the molecule with the shortest bond.
CO2
N2
O3
F2
As the number of bonds between two atoms decreases, which one of the following increases?
number of electrons between two atoms
bond energy
bond length
bond strength
Which of the following molecules contains a double bond?
CO2
NH3
H2O
N2
Rank the following substances based on the amount of bond strength.
H-Cl bond length=76 pm, I-I bond length=166 pm, Cl-Cl bond length=250 pm, H-I bond length=289 pm
HI > HCl > I2 > Cl2
HCl > I2 > Cl2 > HI
I2 > Cl2 > HCl > HI
HCl > HI > I2 > Cl2
Use Table 1 and the periodic table to name the compound HoI2 as a covalent compound.
(a)
Use Table 1 and the periodic table to name the compound Sb3S2 as a covalent compound.
(a)
Use Table 1 and the periodic table to name the compound P3Se5 as a covalent compound.
(a)
Use Table 1 and the periodic table to name the compound Pd2O as a covalent compound.
(a)
Use Table 1 and the periodic table to write the formula of samarium tetrachloride.
(a)
Use Table 1 and the periodic table to write the formula of molybdenum hexabromide.
(a)
Use Table 1 and the periodic table to write the formula of dinitrogen tetroxide.
(a)
Use Table 1 and the periodic table to write the formula of diphosphorus pentasulfide.
(a)
What is the correct formula for sodium hydroxide?
KOH
Na(OH)2
HNa
NaOH
What is the correct formula for hydrochloric acid?
HCl
HClO4
HClO3
ClOH
What is the name of the acid with the formula H2SO3?
sulfurous acid
sulfuric acid
sulfur acid
hydrosulfuric acid
