# ରୁପା

Silver,  47Ag| Electrolytically refined silver |
| ସାଧାରଣ ଗୁଣ |
| ନାମ, ପ୍ରତୀକ | silver, Ag |
| Appearance | lustrous white metal |
| ଉଚ୍ଚାରଣ | /ˈsɪlvər/  |
| Silver in the periodic table |
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 | Cu ↑ **Ag** ↓ Au |
| palladium ← **silver** → cadmium |

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| ପରମାଣୁ କ୍ରମାଙ୍କ (*Z*) | 47 |
| ଶ୍ରେଣୀ, ବ୍ଳକ | group 11, d-block  |
| ପର୍ଯ୍ୟାୟ | period 5  |
| ମୌଳିକ ପ୍ରକାର |   transition metal |
| ମାନକ ପରମାଣବିକ ଓଜନ (*A*r) | 107.8682  |
| ଇଲେକ୍‌ଟ୍ରୋନ୍ ବିନ୍ୟାସ | [Kr] 4d10 5s1  |
| per shell | 2, 8, 18, 18, 1 |
| ଭୌତିକ ଗୁଣ |
| ଅବସ୍ଥା | solid |
| ଗଳନାଙ୍କ | 1234.93 K ​(961.78 °C, ​1763.2 °F)  |
| ସ୍ଫୁଟନାଙ୍କ | 2435 K ​(2162 °C, ​3924 °F)  |
| Density near r.t. | 10.49 g/cm3 |
| when liquid, at m.p. | 9.320 g/cm3  |
| Heat of fusion | 11.28 kJ/mol  |
| Heat of  | 250.58 kJ/mol  |
| Molar heat capacity | 25.350 J/(mol·K)  |
| **pressure**

|  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- |
| P (Pa) | 1 | 10 | 100 | 1 k | 10 k | 100 k |
| at T (K) | 1283 | 1413 | 1575 | 1782 | 2055 | 2433 |

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| Atomic properties |
| Oxidation states | **1**, 2, 3 (amphoteric oxide) |
| Electronegativity | Pauling scale: 1.93  |
| Atomic radius | empirical: 144 pm  |
| Covalent radius | 145±5 pm  |
| Van der Waals radius | 172 pm  |
| Miscellanea |
| Crystal structure |  ​face-centered cubic (fcc) |
| Speed of sound thin rod | 2680 m/s (at r.t.)  |
| Thermal expansion | 18.9 µm/(m·K) (at 25 °C)  |
| Thermal conductivity | 429 W/(m·K)  |
| Thermal diffusivity | 174 mm2/s (at 300 K)  |
| Electrical resistivity | 15.87 n Ω·m (at 20 °C)  |
| Magnetic ordering | diamagnetic  |
| Young's modulus | 83 GPa  |
| Shear modulus | 30 GPa  |
| Bulk modulus | 100 GPa  |
| Poisson ratio | 0.37  |
| Mohs hardness | 2.5  |
| Vickers hardness | 251 MPa  |
| Brinell hardness | 206 MPa  |
| CAS Number | 7440-22-4  |
| ଇତିହାସ |
| ଆବିଷ୍କାର | before 5000 BC |
| Most stable isotopes of silver |
|

| iso | NA | half-life | DM | DE (MeV) | DP |
| --- | --- | --- | --- | --- | --- |
| 105Ag | syn | 41.2 d | ε | - | 105Pd |
| γ | 0.344, 0.280, 0.644, 0.443 | - |
| 106mAg | syn | 8.28 d | ε | - | 106Pd |
| γ | 0.511, 0.717, 1.045, 0.450 | - |
| 107Ag | 51.839% | 107Ag is stable with 60 neutrons |
| 108mAg | syn | 418 y | ε | - | 108Pd |
| IT | 0.109 | 108Ag |
| γ | 0.433, 0.614, 0.722 | - |
| 109Ag | 48.161% | 109Ag is stable with 62 neutrons |
| 111Ag | syn | 7.45 d | β− | 1.036, 0.694 | 111Cd |
| γ | 0.342 | - |

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**ରୁପା** ([Silver; *ସିଲ୍‌ଭର୍*] Error: {{Lang-xx}}: text has italic markup (help)) ହେଉଛି ଏକ ରାସାୟନିକ ମୌଳିକ ଯାହାର ପ୍ରତୀକ Ag (ଗ୍ରୀକ: άργυρος *árguros; ଆର୍‌ଗୁରୋସ୍*, [argentum; *ଆର୍‌ଜେଣ୍ଟମ୍*] Error: {{Lang-xx}}: text has italic markup (help), ଉଭୟ ପ୍ରାଚୀନ ଇଣ୍ଡୋ-ୟୁରୋପୀୟ ମୂଳ *\*arg-*ରୁ ଆସିଛି,ମାନେ "grey" କିମ୍ବା "shining") ଓ ପରମାଣୁ କ୍ରମାଙ୍କ ୪୭ ।

## ଧର୍ମ

## ଉପସ୍ଥିତି

## ଗଠନ

## ଉତ୍ପାଦନ

## ସମସ୍ଥାନିକ

## ବ୍ୟବହାର

## ଆଧାର

## ବାହାର ତଥ୍ୟ

* Chemistry in its element podcast (MP3) from the Royal Society of Chemistry's Chemistry World: Silver
* Silver at *The Periodic Table of Videos* (University of Nottingham)
* Society of American Silversmiths
* The Silver Institute A silver industry website
* A collection of silver items Samples of silver
* Transport, Fate and Effects of Silver in the Environment
* Picture in the Element collection from Heinrich Pniok Archived 2017-05-25 at the Wayback Machine.