<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>0035-001X</journal-id>
<journal-title><![CDATA[Revista mexicana de física]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. mex. fis.]]></abbrev-journal-title>
<issn>0035-001X</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Mexicana de Física]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0035-001X2020000100001</article-id>
<article-id pub-id-type="doi">10.31349/revmexfis.66.1</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Relativistic treatment of the Hellmann-generalized Morse potential]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Okoi]]></surname>
<given-names><![CDATA[P. O.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Edet]]></surname>
<given-names><![CDATA[C. O.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Magu]]></surname>
<given-names><![CDATA[T. O.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,University of Calabar Department of Physics ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Nigeria</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,University of Port Harcourt Department of Physics ]]></institution>
<addr-line><![CDATA[Choba ]]></addr-line>
<country>Nigeria</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,University of Calabar Department of Pure and Applied Chemistry ]]></institution>
<addr-line><![CDATA[Calabar ]]></addr-line>
<country>Nigeria</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,University of Chinese  ]]></institution>
<addr-line><![CDATA[Beijing ]]></addr-line>
<country>China</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>02</month>
<year>2020</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>02</month>
<year>2020</year>
</pub-date>
<volume>66</volume>
<numero>1</numero>
<fpage>1</fpage>
<lpage>13</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0035-001X2020000100001&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0035-001X2020000100001&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0035-001X2020000100001&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract We solve the relativistic equations (Klein-Gordon and Dirac equation) via the conventional Nikiforov-Uvarov method. In order to overcome the centrifugal barrier, we employed the well-known Greene and Aldrich approximation scheme. The corresponding normalized eigenfunctions was also obtained in each case. It was shown that in the non-relativistic limits, both energy equations obtained by solving Klein-Gordon and Dirac equations, as well as the wavefunctions reduced to the non-relativisitc energy equation. The bound state energy eigenvalues for N2, CO, NO, CH and HCl diatomic molecules were computed for various vibrational and rotational quantum numbers. It was found that our results agree with those in literature.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Hellmann-generalized Morse potential]]></kwd>
<kwd lng="en"><![CDATA[Dirac Equation]]></kwd>
<kwd lng="en"><![CDATA[Klein-Gordon equation]]></kwd>
<kwd lng="en"><![CDATA[Nikiforov-Uvarov method]]></kwd>
<kwd lng="en"><![CDATA[Schrödinger equation]]></kwd>
<kwd lng="en"><![CDATA[03.65. Ge]]></kwd>
<kwd lng="en"><![CDATA[03.65.Fd]]></kwd>
<kwd lng="en"><![CDATA[0.65.Pm]]></kwd>
<kwd lng="en"><![CDATA[02.30.Gp]]></kwd>
</kwd-group>
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