Question: Is BaSO4 ( barium sulfate ) an ionic or Molecular bond ?
Answer: BaSO4 ( barium sulfate ) is a Containing both (ionic and covalent)

BaSO4 ( barium sulfate ) is a Containing both (ionic and covalent)
What is chemical bond, ionic bond, Molecular bond?

Chemical bond
A chemical bond is a lasting attraction between atoms, ions or molecules that enables the formation of chemical compounds. The bond may result from the electrostatic force of attraction between oppositely charged ions as in ionic bonds; or through the sharing of electrons as in covalent bonds .
https://en.wikipedia.org/wiki/Chemical_bond

ionic

Ionic bonding
Ionic bonding is a type of chemical bond that involves the electrostatic attraction between oppositely charged ions, and is the primary interaction occurring in ionic compounds.  The ions are atoms that have gained one or more electrons (known as anions, which are negatively charged) and atoms that have lost one or more electrons (known as cations, which are positively charged).
https://en.wikipedia.org/wiki/Ionic_bonding

covalent or molecular

Molecular bond
A covalent bond, also called a molecular bond, is a chemical bond that involves the sharing of electron pairs between atoms. These electron pairs are known as shared pairs or bonding pairs, and the stable balance of attractive and repulsive forces between atoms, when they share electrons, is known as covalent bonding.
https://en.wikipedia.org/wiki/Covalent_bond

LIST IONIC
Potassium Hydroxide
Al2S3
LiF
CsCl
Mg(NO3)2
Mg(ClO3)2
Ba(OH)2 
HClO4
NaBrO3
KBrO3
NaClO3
KClO3
H3PO4
ZnCl2
KClO4
KNO3
MgS
KOH
Cr2O3
NaI
FeCl3
Na2O
CuO
HiO3
MgBr2
PtO2
kbr
NaBr
KI
kmno4
BaF2
MgF2
NaNO3
mgcl2
KClO
barium hydroxide
NaOH
NiCl2
KCl
Fe2O3
CoCl2
hydrogen iodide 
potassium iodide
BaCl2
potassium chloride
sodium hydroxide
CaCO3
CaCl2
Rb2O
CaF2
Mg3N2
CaBr2
BaO
KF
CaO
Na2CO3
Al2O3
SrO
Na2S
NH4NO3
K2S
nahco3
RbCl
sodium hypochlorite
MgSO4
CaSO4
barium oxide
NH4Cl
K3PO4
magnesium nitride
sodium sulfate
Na3PO4
K2O
BaS
aluminum sulfide
sodium carbonate
SrCl2
calcium nitrate
agno3
CaS
magnesium sulfate
K2SO4
sodium sulfide
CuCl2
potassium oxide
silver phosphate
libr
Li2O
CuSO4 
(nh4)2so4
ammonium sulfate
FeSO4
magnesium iodide
aluminum sulfate
sodium bicarbonate
sodium oxide
Calcium chloride
NH4
sodium iodide
AgCl
ammonium hydroxide
MgO
ammonium nitrate
licl
potassium carbonate
aluminum nitrate
Kl
potassium bromide
NaNH2
NH4OH
CsF
sodium bromide
aluminum oxide
copper
potassium nitrate
NO3-1
MnO2 
NaF
na
calcium oxide
magnesium oxide
iron iii
calcium fluoride
sulfur hexafluoride
k20
phosphoric acid
iron oxide
alf3 
magnesium chloride
nah
ammonium chloride
silver chloride
baking soda
lithium chloride 
Magnesium
sodium fluoride
lithium fluoride
lih
bef2
lithium acetate
ammonium bromide ( NH4Br )
NaClO4 ( Sodium Perchlorate )
Mg(BrO3)2 ( Magnesium Bromate )
NaCl ( Sodium Chloride )
kbro4
nabro4
Mg(ClO4)2 ( Magnesium Perchlorate )
CrCl2 ( Chromium (II) Chloride )
NiI2 ( Nickel (II) Iodide )
BP ( boron phosphide )
FeP ( Iron (III) Phosphide )
LaP ( Lanthanum Phosphide )
NaNO2 ( Sodium Nitrite )
SnO2 ( Tin (II) Peroxide )
Sc2O3 ( Scandium Oxide )

LIST COVALENT BOND / MOLECULAR BOND
PBr3
NF3
hi
hydriodic acid
NO2
water
NO
HClO
hclo3
HBr
HNO2
HBrO4
H2SO3
H3PO3
CH3NH2
NCl3
CS2
HBrO3
hch3co2
HNO3
acetic acid
Cf2Cl2
H2SO4
SO3
CO2
CH4
HC2H3O2
CCL4
HCN
BI3
NH3
hf
SO2
ch3cooh
CF4
NI3
clo2
ammonia
perchloric acid
PCL3
nitric acid
Chloric acid
h2o
CH3OH
sucrose
hydrogen bromide
Hydrobromic acid
SCl2
distilled water
PF5
sulfuric acid
CO
icl
Cl2
O2
SiO2
BrCl
iodine
N2
SF6
glucose
CBr4
vegetable oil
H2S
ethanol
PCl5
dinitrogen pentoxide
N2O5
P4
phosphorus trichloride
dinitrogen trioxide
C6H12O6
NBr3
carbon dioxide
BrCl
SF4
methanol
phosphorus trifluoride 
phosphorus pentachloride
P2O5
SiF4
PH3
nitrogen tribromide
silicon tetrafluoride
methane
carbon tetrachloride
nitrogen dioxide
Br2
P4O10 
H2 
C6H6
dextrose
TiBr4
glycerol
N2O2
naphthalene
xef4
toluene
aspirin
acetone
SiCl4
benzoic acid
stearic acid
nitrogen
FCl
BCl3
silicon dioxide
N2O
fructose
salicylic acid
c12h22o11
tap water
nitrogen trichloride
sulfur dioxide
N2O3
N2O4
cyclohexane
phosphorus pentoxide
hydrogen peroxide
i2
C2H4
citric acid
h2o2
paraffin wax
gacl3
CH3CH3
vinegar
PF3
OF2
CHCl3
sugar
brf
FeO
chlorine
s8
carbon monoxide
silicon tetrachloride 
f2
titanium dioxide
nitrogen bromide
corn starch
oxygen
hydrochloric acid
becl2 
AlCl3
aluminium chloride
hydrogen fluoride
aluminum chloride
hcl ( Hydrogen chloride )
HClO2 ( Chlorous acid )
B2H6 ( Diborane )
h2co3 ( carbonic acid )
ClF3 ( Chlorine trifluoride )
HN3 ( Hydrazoic acid ) SiO ( Silicon monoxide )
h2c2o4 ( Oxalic acid )
XeO3 ( Xenon trioxide )
NOCl ( Nitrosyl chloride ) 
SO ( sulfur oxide )
ses2 ( Selenium disulfide )
CH3CN ( Acetonitrile )
IF5 ( Iodine pentafluoride )

Containing both (ionic and covalent)
sodium acetate
na2so4
magnesium nitrate
calcium carbonate
AlBr3
BaSO4 ( barium sulfate )

We get answers from
Resources
www.quora.com
answers.yahoo.com
answers.com
www.quia.com
quizlet.com
www.reference.com
socratic.org
https://en.wikipedia.org
https://en.wikipedia.org/wiki/Ionic_bonding
https://en.wikipedia.org/wiki/Covalent_bond
https://en.wikipedia.org/wiki/Chemical_bond
pubchem.ncbi.nlm.nih.gov

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Question: Is BaSO4 ( barium sulfate ) an ionic or Molecular bond ?
Answer: BaSO4 ( barium sulfate ) is a Containing both (ionic and covalent)