Robert Kane
...that Irish chemist Robert Kane (1809–1890) showed that hydrogen is electropositive?
...that <a href="./Ireland" id="mwAyk" rel="mw:WikiLink" title="Ireland">Irish</a> <a href="./Chemistry" id="mwAyo" rel="mw:WikiLink" title="Chemistry">chemist</a> <b id="mwAys"><a href="./Robert_Kane_(chemist)" id="mwAyw" rel="mw:WikiLink" title="Robert Kane (chemist)">Robert Kane</a></b> (1809<span id="mwAy0" typeof="mw:Entity">–</span>1890) showed that <a href="./Hydrogen" id="mwAy4" rel="mw:WikiLink" title="Hydrogen">hydrogen</a> is <a href="./Electronegativity" id="mwAy8" rel="mw:WikiLink" title="Electronegativity">electropositive</a>?