रुबिडियम
37
Rb
समूह
1
आवर्त
5
ब्लॉक
s
प्रोटॉन
इलेक्ट्रॉन्स
न्यूट्रॉन
37
37
48
सामान्य गुण
परमाणु संख्या
37
परमाणु भार
85.4678
द्रव्यमान संख्या
85
श्रेणी
क्षारीय धातुएँ
रंग
रजत
रेडियोधर्मी
नहीं
From the Latin word rubidus, deepest red
क्रिस्टल की संरचना
शरीर केंद्रित घन
इतिहास
German chemists Robert Bunsen and Gustav Kirchhoff discovered rubidium in 1861 by the newly developed method of flame spectroscopy.
The separation of the metal was tried by Bunsen, but he never got samples with more than 18% of Rubidium.
The separation of the metal was only accomplished by George de Hevesy, through the hydrolysis of melted rubidium hydroxide.
The separation of the metal was tried by Bunsen, but he never got samples with more than 18% of Rubidium.
The separation of the metal was only accomplished by George de Hevesy, through the hydrolysis of melted rubidium hydroxide.
इलेक्ट्रॉन प्रति शेल
2, 8, 18, 8, 1
इलेक्ट्रॉन कॉन्फिगरेशन
[Kr] 5s1
Rubidium burns with a reddish-violet flame color
भौतिक गुण
अवस्था
ठोस
घनत्व
1.532 g/cm3
गलनांक
312.46 K | 39.31 °C | 102.76 °F
क्वथनांक
961.15 K | 688 °C | 1270.4 °F
विलय ऊष्मा
2.19 कि.जूल/मोल
वाष्पीकरण ऊष्मा
72 कि.जूल/मोल
विशिष्ट ऊष्मा क्षमता
0.363 जूल/ग्राम•केल्विन
पृथ्वी की पपड़ी में प्रचुरता
0.006%
ब्रह्मांड में प्रचुरता
1×10-6%
सी ए एस संख्या
7440-17-7
PubChem सी.आई.डी. संख्या
5357696
परमाण्विक गुण
परमाणु का त्रिज्या
248 pm
संयोजी त्रिज्या
220 pm
इलेक्ट्रोनेगेटिविटी
0.82 (पाइलिंग पैमाना)
आयनीकरण ऊर्जाएं
4.1771 eV
परमाणु आयतन
55.9 से.मी.३/मोल
तापीय चालकता
0.582 W/cm·K
ऑक्सीकरण स्थितियां
-1, 1
उपयोग
Rubidium is used as a getter in vacuum tubes and as a photocell component.
Rubidium compounds are sometimes used in fireworks to give them a purple color.
Rubidium salts are used in glasses and ceramics.
Rubidium-87 is slightly radioactive and has been used extensively in dating rocks.
Rubidium compounds are sometimes used in fireworks to give them a purple color.
Rubidium salts are used in glasses and ceramics.
Rubidium-87 is slightly radioactive and has been used extensively in dating rocks.
Rubidium is not known to be toxic
समस्थानिक
स्थिर आइसोटोप
85Rbअस्थिर समस्थानिक
71Rb, 72Rb, 73Rb, 74Rb, 75Rb, 76Rb, 77Rb, 78Rb, 79Rb, 80Rb, 81Rb, 82Rb, 83Rb, 84Rb, 86Rb, 87Rb, 88Rb, 89Rb, 90Rb, 91Rb, 92Rb, 93Rb, 94Rb, 95Rb, 96Rb, 97Rb, 98Rb, 99Rb, 100Rb, 101Rb, 102Rb