Rubidium, 37Rb| File:Rb5.JPG |
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| उच्चारण | (roo-BID-ee-əm) |
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| दिखावट | grey white |
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| Standard atomic weight Ar°(Rb) | - 85.4678±0.0003
- 85.468±0.001 (abridged)[1]
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| Atomic number (Z) | 37 |
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| समूह | group 1: hydrogen and alkali metals |
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| अवधि | period 5 |
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| ब्लॉक | s-block |
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| ऋणावेशित सूक्ष्म अणु का विन्यास | [Kr] 5s1 |
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| प्रति शेल इलेक्ट्रॉन | 2, 8, 18, 8, 1 |
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| Phase at STP | solid |
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| गलनांक | 312.45 K (39.30 °C, 102.74 °F) |
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| क्वथनांक | 961 K (688 °C, 1270 °F) |
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| Density (near r.t.) | 1.532 g/cm3 |
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| when liquid (at m.p.) | 1.46 g/cm3 |
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| तीन बिंदु | 312.41 K, ? kPa[2] |
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| क्रिटिकल पॉइंट | 2093 K, 16 MPa (extrapolated)[2] |
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| संलयन की गर्मी | 2.19 kJ/mol |
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| Heat of vaporization | 69 kJ/mol |
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| दाढ़ गर्मी क्षमता | 31.060 J/(mol·K) |
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Vapor pressure
| P (Pa)
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1
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10
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100
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1 k
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10 k
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100 k
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| at T (K)
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434
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486
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552
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641
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769
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958
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| ऑक्सीकरण राज्य | −1, +1 (a strongly basic oxide) |
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| इलेक्ट्रोनगेटिविटी | Pauling scale: 0.82 |
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| Ionization energies | - 1st: 403 kJ/mol
- 2nd: 2632.1 kJ/mol
- 3rd: 3859.4 kJ/mol
-
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| परमाणु का आधा घेरा | empirical: 248 pm |
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| सहसंयोजक त्रिज्या | 220±9 pm |
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| [वैन डेर वाल्स रेडियस]] | 303 pm |
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| Spectral lines of rubidium |
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| प्राकृतिक घटना | primordial |
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| क्रिस्टल की संरचना | body-centered cubic (bcc) |
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| Speed of sound thin rod | 1300 m/s (at 20 °C) |
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| थर्मल विस्तार | 90 µm/(m⋅K)[3] (at r.t.) |
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| ऊष्मीय चालकता | 58.2 W/(m⋅K) |
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| विद्युत प्रतिरोधकता | 128 nΩ⋅m (at 20 °C) |
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| चुंबकीय आदेश | paramagnetic[4] |
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| दाढ़ चुंबकीय संवेदनशीलता | +17.0×10−6 cm3/mol (303 K)[5] |
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| यंग मापांक | 2.4 GPa |
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| थोक मापांक | 2.5 GPa |
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| मोहन कठोरता | 0.3 |
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| ब्रिनेल हार्डनेस | 0.216 MPa |
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| CAS नंबर | 7440-17-7 |
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| खोज] | Robert Bunsen and Gustav Kirchhoff (1861) |
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| पहला अलगाव | George de Hevesy |
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Category Category: Rubidium | references |
Rb: Script error: The module returned a nil value. It is supposed to return an export table.
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|
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in
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calc from C
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diff
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report
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ref
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| C
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39.30
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—
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—
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| K
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312.45
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312.45
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0
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| F
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102.74
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102.74
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0
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|
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| max precision
|
2
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| WD
|
Script error: The module returned a nil value. It is supposed to return an export table.
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|
|
Script error: The module returned a nil value. It is supposed to return an export table.
|
| input
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C: 39.30, K: 312.45, F: 102.74
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| comment
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|
Rb: Script error: The module returned a nil value. It is supposed to return an export table.
|
|
|
in
|
calc from C
|
diff
|
report
|
ref
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| C
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688
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—
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—
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|
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| K
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961
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961
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0
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| F
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1270
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1270
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0
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|
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| max precision
|
0
|
| WD
|
Script error: The module returned a nil value. It is supposed to return an export table.
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|
|
Script error: The module returned a nil value. It is supposed to return an export table.
|
| input
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C: 688, K: 961, F: 1270
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| comment
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References
These references will appear in the article, but this list appears only on this page.
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