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Hafnium - Revision history
2024-03-29T09:28:41Z
Revision history for this page on the wiki
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2013-10-16T17:56:54Z
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<td colspan="2" style="background-color: #fff; color: #222; text-align: center;">Revision as of 17:56, 16 October 2013</td>
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2013-10-16T17:29:01Z
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<td colspan="2" style="background-color: #fff; color: #222; text-align: center;">Revision as of 17:29, 16 October 2013</td>
</tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l36" >Line 36:</td>
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<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>cryst=Hexagonal |</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>cryst=Hexagonal |</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>}}</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>}}</div></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>'''Hafnium''' is a Transition Metal in group 4.</div></td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>'''Hafnium''' is a Transition Metal in group 4. <ins class="diffchange diffchange-inline"> </ins></div></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>It has a Hexagonal crystalline structure.</div></td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins class="diffchange diffchange-inline"> </ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>It has a Hexagonal crystalline structure. <ins class="diffchange diffchange-inline"> </ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins class="diffchange diffchange-inline"> </ins></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>This element has 5 stable isotopes: 176, 177, 178, 179, and 180. </div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>This element has 5 stable isotopes: 176, 177, 178, 179, and 180. </div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;"> </ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">It forms part of the substance of the highest known melting point compound, tantalum-hafnium-carbide (Ta<sub>4</sub>HfC<sub>5</sub>), with a melting point of approximately 4215 C.<ref>McGRAW-HILL ENCYCLOPEDIA OF Science & Technology, 8th Edition, (c)1997, vol 8, p 318</ref> Hafnium is always found in nature mixed with zirconium whose ores often contain 1% to 5% hafnium.<ref>CRC HANDBOOK of CHEMISTRY and PHYSICS, 64TH EDITION (1983-1984), p B-16</ref> Hafnium is used in nuclear fission reactor control rods because of its high neutron absorption cross section.</ins></div></td></tr>
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Strangelv: 1 revision(s)
2007-02-12T04:00:08Z
<p>1 revision(s)</p>
<p><b>New page</b></p><div>{{Element |<br />
name=Hafnium |<br />
symbol=Hf |<br />
available= |<br />
need= |<br />
number=72 |<br />
mass=178.49 |<br />
group=4 |<br />
period=6 |<br />
phase=Solid |<br />
series=Transition Metals |<br />
density=13.31 g/cm3 |<br />
melts=2506K,<BR/>2233°C,<BR/>4051°F |<br />
boils=4876K,<BR/>4603°C,<BR/>8317°F |<br />
isotopes=176<BR/>177<BR/>178<BR/>179<BR/>180 |<br />
prior=[[Lutetium|<FONT color="#7F7FFF">Lu</FONT>]] |<br />
next=[[Tantalum|<FONT color="#7F7FFF">Ta</FONT>]] |<br />
above=[[Zirconium|<FONT color="#7F7FFF">Zr</FONT>]] |<br />
aprior=[[Yttrium|<FONT color="#7F7FFF">Y</FONT>]] |<br />
anext=[[Niobium|<FONT color="#7F7FFF">Nb</FONT>]] |<br />
below=[[Rutherfordium|<FONT color="#7F7FFF">Rf</FONT>]] |<br />
bprior=[[Actinium|<FONT color="#7F7FFF">Ac</FONT>]] |<br />
bnext=[[Dubnium|<FONT color="#7F7FFF">Db</FONT>]] |<br />
radius=155 |<br />
bohr=208 |<br />
covalent=150 |<br />
vdwr= |<br />
irad=(+4) 83 |<br />
ipot=6.83 |<br />
econfig=1s<sup>2</sup> <br/>2s<sup>2</sup> 2p<sup>6</sup> <br/>3s<sup>2</sup> 3p<sup>6</sup> 3d<sup>10</sup> <br/>4s<sup>2</sup> 4p<sup>6</sup> 4d<sup>10</sup> 4f<sup>14</sup> <br/>5s<sup>2</sup> 5p<sup>6</sup> 5d<sup>2</sup> <br/>6s<sup>2</sup> |<br />
eshell=2, 8, 18, 32, 10, 2 |<br />
enega=1.3 |<br />
eaffin=~0 |<br />
oxstat=4 |<br />
magn=? |<br />
cryst=Hexagonal |<br />
}}<br />
'''Hafnium''' is a Transition Metal in group 4.<br />
It has a Hexagonal crystalline structure.<br />
This element has 5 stable isotopes: 176, 177, 178, 179, and 180. <br />
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[[Category:Solids]]<br />
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Strangelv