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<p><b>नया पन्ना</b></p><div>{{Periodic table (micro)|mark=lanthanide|title=[[पीरियॉडिक टेबल]] में लैंथेनाइड}}<br />
'''लैंथेनाइड''' [[पीरियॉडिक टेबल]] में एगो [[पीरियॉडिक टेबल समूह|समूह]] हवे।<br />
<br />
==ए तत्व सभ के भौतिक गुणधर्म==<br />
<center><br />
{| class="wikitable" style="font-size: 95%; text-align: center;"<br />
![[Chemical element]]!![[Lanthanum|La]]!![[Cerium|Ce]]!![[praseodymium|Pr]]!![[neodymium|Nd]]!![[promethium|Pm]]!![[samarium|Sm]]!![[europium|Eu]]!![[gadolinium|Gd]]!![[terbium|Tb]]!![[dysprosium|Dy]]!![[holmium|Ho]]!![[erbium|Er]]!![[thulium|Tm]]!![[ytterbium|Yb]]!![[lutetium|Lu]]<br />
|-<br />
| [[Atomic number]]<br />
|57||58||59||60||61||62||63||64||65||66||67||68||69||70||71<br />
|-<br />
|Image|| [[File:Lanthanum-2.jpg|50px]]||[[File:Cerium2.jpg|50px]]||[[File:Praseodymium.jpg|50px]]||[[File:Neodymium2.jpg|50px]]|| ||[[File:Samarium-2.jpg|50px]]||[[File:Europium.jpg|50px]]||[[File:Gadolinium-4.jpg|50px]]||[[File:Terbium-2.jpg|50px]]||[[File:Dy chips.jpg|50px]]||[[File:Holmium2.jpg|50px]]||[[File:Erbium-crop.jpg|50px]]||[[File:Thulium sublimed dendritic and 1cm3 cube.jpg|50px]]||[[File:Ytterbium-3.jpg|50px]]||[[File:Lutetium sublimed dendritic and 1cm3 cube.jpg|50px]]<br />
|-<br />
|Density (g/cm<sup>3</sup>)<br />
|6.162 ||6.770 ||6.77 ||7.01 ||7.26 ||7.52 ||5.244 ||7.90 ||8.23 ||8.540 ||8.79 ||9.066 ||9.32 ||6.90 ||9.841<br />
|-<br />
|Melting point (°C)<br />
|920 ||795 ||935 ||1024 ||1042 ||1072 ||826 ||1312 ||1356 ||1407 ||1461 ||1529 ||1545 ||824 ||1652<br />
|-<br />
|Boiling point (°C)<br />
|3464 ||3443 ||3520 ||3074 ||3000 ||1794 ||1529 ||3273 ||3230 ||2567 ||2720 ||2868 ||1950 ||1196 ||3402<br />
|-<br />
| Atomic [[electron configuration]]*||'''5d<sup>1</sup>'''||4f<sup>1</sup>'''5d<sup>1</sup>'''||4f<sup>3</sup>|| 4f<sup>4</sup>|| 4f<sup>5</sup>||4f<sup>6</sup>|| 4f<sup>7</sup>|| 4f<sup>7</sup>'''5d<sup>1</sup>'''||4f<sup>9</sup>||4f<sup>10</sup>|| 4f<sup>11</sup>||4f<sup>12</sup>||4f<sup>13</sup>||4f<sup>14</sup>||4f<sup>14</sup>'''5d<sup>1</sup>'''<br />
|-<br />
|Metal lattice (RT)<br />
|dhcp ||fcc ||dhcp ||dhcp ||dhcp ||** ||bcc ||hcp ||hcp ||hcp ||hcp||hcp ||hcp ||hcp ||hcp<br />
|-<br />
|Metallic radius pm<br />
| 162 || 181.8 ||182.4 ||181.4 ||183.4 ||180.4 ||208.4 ||180.4 ||177.3 ||178.1 ||176.2 ||176.1 ||175.9 ||193.3 ||173.8<br />
|-<br />
|Resistivity (25&nbsp;°C) /μ Ohm cm<br />
| 57-80<br>20&nbsp;°C || 73 ||68 ||64 || || 88 ||90 ||134 || 114 ||57 ||87 ||87 ||79 ||29 ||79<br />
|-<br />
|mag susceptibility<br>χ<sub>mol</sub> /10<sup>−6</sup>([[cubic centimeter|cm<sup>3</sup>]]·[[Mole (unit)|mol]]<sup>−1</sup>)<br />
||+95.9 ||+2500 (β)||+5530(α)||+5930 (α)|| ||+1278(α)||+30900||+185000<br>(350 K)||+170000 (α)||+98000||+72900||+48000||+24700||+67 (β)||+183<br />
|}<br />
</center><br />
<nowiki>*</nowiki> Between initial [Xe] and final 6s<sup>2</sup> electronic shells<br />
<nowiki>**</nowiki> Sm has a close packed structure like the other lanthanides but has an unusual 9 layer repeat<br />
<br />
==इहो देखल जाय==<br />
* [[पीरियॉडिक टेबल]]<br />
* [[पीरियॉडिक टेबल समूह]]<br />
<br />
==संदर्भ==<br />
{{Reflist}}<br />
{{रसायन-आधार}}<br />
<br />
{{पीरियॉडिक टेबल संछेप}}<br />
{{Authority control}}<br />
<br />
[[श्रेणी:पीरियॉडिक टेबल]]<br />
[[श्रेणी:पीरियॉडिक टेबल में समूह]]<br />
[[श्रेणी:लैंथेनाइड]]</div>
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