It is generally accepted that he was the first to discover oxygen, among a number of prominent scientists (namely his esteemed colleagues Antoine Lavoisier, Joseph Black, and Joseph Priestley). In fact, it was determined that Scheele made the discovery three years prior to Priestley and at least several before Lavoisier. Joseph Priestley relied heavily on Scheele's work, perhaps so much so that he would not have made the discovery of oxygen on his own.
It is generally accepted that he was the first to discover oxygen, among a number of prominent scientists (namely his esteemed colleagues Antoine Lavoisier, Joseph Black, and Joseph Priestley).
expl
Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs
it
It
PRON
PRP
aux:pass
Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin
be
is
AUX
VBZ
advmod
generally
generally
ADV
RB
root
Tense=Past|VerbForm=Part|Voice=Pass
accept
accepted
VERB
VBN
mark
that
that
SCONJ
IN
nsubj
Case=Nom|Gender=Masc|Number=Sing|Person=3|PronType=Prs
he
he
PRON
PRP
cop
Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin
be
was
AUX
VBD
det
Definite=Def|PronType=Art
the
the
DET
DT
csubj:pass
Degree=Pos|NumType=Ord
first
first
ADJ
JJ
mark
to
to
PART
TO
acl
VerbForm=Inf
discover
discover
VERB
VB
obj
Number=Sing
oxygen
oxygen
NOUN
NN
punct
,
,
PUNCT
,
case
among
among
ADP
IN
det
Definite=Ind|PronType=Art
a
a
DET
DT
obl
Number=Sing
number
number
NOUN
NN
case
of
of
ADP
IN
amod
Degree=Pos
prominent
prominent
ADJ
JJ
nmod
Number=Plur
scientist
scientists
NOUN
NNS
punct
(
(
PUNCT
-LRB-
advmod
namely
namely
ADV
RB
nmod:poss
Case=Gen|Gender=Masc|Number=Sing|Person=3|Poss=Yes|PronType=Prs
his
his
PRON
PRP$
amod
Degree=Pos
esteemed
esteemed
ADJ
JJ
appos
Number=Plur
colleague
colleagues
NOUN
NNS
appos
Number=Sing
Antoine
Antoine
PROPN
NNP
flat
Number=Sing
Lavoisier
Lavoisier
PROPN
NNP
punct
,
,
PUNCT
,
conj
Number=Sing
Joseph
Joseph
PROPN
NNP
flat
Number=Sing
Black
Black
PROPN
NNP
punct
,
,
PUNCT
,
cc
and
and
CCONJ
CC
conj
Number=Sing
Joseph
Joseph
PROPN
NNP
flat
Number=Sing
Priestley
Priestley
PROPN
NNP
punct
)
)
PUNCT
-RRB-
punct
.
.
PUNCT
.
In fact, it was determined that Scheele made the discovery three years prior to Priestley and at least several before Lavoisier.
case
in
In
ADP
IN
obl
Number=Sing
fact
fact
NOUN
NN
punct
,
,
PUNCT
,
expl
Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs
it
it
PRON
PRP
aux:pass
Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin
be
was
AUX
VBD
root
Tense=Past|VerbForm=Part|Voice=Pass
determine
determined
VERB
VBN
mark
that
that
SCONJ
IN
nsubj
Number=Sing
Scheele
Scheele
PROPN
NNP
ccomp
Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin
make
made
VERB
VBD
det
Definite=Def|PronType=Art
the
the
DET
DT
obj
Number=Sing
discovery
discovery
NOUN
NN
nummod
NumForm=Word|NumType=Card
three
three
NUM
CD
nmod:npmod
Number=Plur
year
years
NOUN
NNS
case
Degree=Pos
prior
prior
ADJ
JJ
fixed
to
to
ADP
IN
obl
Number=Sing
Priestley
Priestley
PROPN
NNP
cc
and
and
CCONJ
CC
advmod
ExtPos=ADV
at
at
ADP
IN
fixed
Degree=Sup
least
least
ADJ
JJS
conj
Degree=Pos
several
several
ADJ
JJ
case
before
before
ADP
IN
obl
Number=Sing
Lavoisier
Lavoisier
PROPN
NNP
punct
.
.
PUNCT
.
Joseph Priestley relied heavily on Scheele's work, perhaps so much so that he would not have made the discovery of oxygen on his own.
nsubj
Number=Sing
Joseph
Joseph
PROPN
NNP
flat
Number=Sing
Priestley
Priestley
PROPN
NNP
root
Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin
rely
relied
VERB
VBD
advmod
heavily
heavily
ADV
RB
case
on
on
ADP
IN
nmod:poss
Number=Sing
Scheele
Scheele
PROPN
NNP
case
's
's
PART
POS
obl
Number=Sing
work
work
NOUN
NN
punct
,
,
PUNCT
,
advmod
perhaps
perhaps
ADV
RB
advmod
so
so
ADV
RB
advmod
much
much
ADV
RB
mark
so
so
SCONJ
IN
fixed
that
that
SCONJ
IN
nsubj
Case=Nom|Gender=Masc|Number=Sing|Person=3|PronType=Prs
he
he
PRON
PRP
aux
VerbForm=Fin
would
would
AUX
MD
advmod
not
not
PART
RB
aux
VerbForm=Inf
have
have
AUX
VB
advcl
Tense=Past|VerbForm=Part
make
made
VERB
VBN
det
Definite=Def|PronType=Art
the
the
DET
DT
obj
Number=Sing
discovery
discovery
NOUN
NN
case
of
of
ADP
IN
nmod
Number=Sing
oxygen
oxygen
NOUN
NN
case
on
on
ADP
IN
nmod:poss
Case=Gen|Gender=Masc|Number=Sing|Person=3|Poss=Yes|PronType=Prs
his
his
PRON
PRP$
obl
Degree=Pos
own
own
ADJ
JJ
punct
.
.
PUNCT
.