Worksheetsquiz chemistry
Total questions: 21
Worksheet time: 11mins
Which of these elements does not exist as a diatomic molecule?
I
HE
F
H
Which one of the following compounds is not covalent
SCl2
HCl
S2Cl2
KCl
How many valence electrons does an atom of any halogen have?
1
7
4
2
A diatomic molecule with a triple covalent bond is
N2
Br2
H2
. O2.
..
A molecule of nitrous oxide, N2O, :N=N=O contains all of the following except
..
a coordinate covalent bond.
a double bond.
a triple bond.
nonbonding pairs of electrons
If a bonding pair of electrons is unequally shared between two atoms, the bond is
ionic.
nonpolar covalent.
coordinate covalent
polar covalent
Which of the following compounds is not ionic?
NaI
CO2
CaCl2
Na2O
A covalent bond forms
when atoms share electrons.
when an element becomes a noble gas.
between metals and nonmetals.
when electrons are transferred from one atom to another
Which of these compounds would not have covalent bonds?
NO2
. N2O4
K2O
H2O
A molecule with a single covalent bond is
CO2.
F2.
NO.
N2.
Chlorine is a gas, bromine is a liquid, and iodine is a solid because of differences in the strength of their
hydrogen bonds.
dipole interactions.
dispersion forces.
polar bonds
The weakest types of attractions between molecules—dispersion forces and dipole interactions—are called?
Hydrogen Bonding.
Intramolecular Forces
All of these
Van der Waals forces.
Which of the following formulas represent an ionic compounds that can be made from these six elements: Al, Be, F, Mg, Li, and S?
Mg3Al2.
MgF2
AlLi
BeS
Carbon dioxide is a _____molecule with two polar bonds.
linear.
Trigonal
pyramidal
None of these
A water molecule has two bonding pairs and two lone pairs of electrons around the oxygen atom. Therefore, it has a _____shape.?
Linear
Trigonal
Bent
None of these
Which of the following atoms would you expect to have the largest atomic radius?
I
Ca
Rb
K
What is the name of (NH4)2S?
ammonium sulfide
ammonia sulfat
ammonium sulfate
All of these
When H+ forms a bond with H2O to form hydronium ion, H3O + , this bond is called a coordinate covalent bond because
both bonding electrons come from the oxygen atom
it is an especially strong bond.
the electrons are equally shared.
the oxygen no longer has eight electrons surrounding it.
25. Which of the following molecules has one lone pair of electrons?
CH4
H2O
HCl
NH3
Which of the following is the weakest?
hydrogen bond
dipole interaction
polar covalent bond
ionic bond
The carbon tetrachloride molecule is
four-cornered.
tetrahedral
square
pyramidal.
