पोलोनियम
84
Po
समूह
16
आवर्त
6
ब्लॉक
p
प्रोटॉन
इलेक्ट्रॉन्स
न्यूट्रॉन
84
84
126
सामान्य गुण
परमाणु संख्या
84
परमाणु भार
[210]
द्रव्यमान संख्या
210
श्रेणी
उपधातु
रंग
रजत
रेडियोधर्मी
हाँ
Named after Poland, native country of Madam Curie
क्रिस्टल की संरचना
सरल घन
इतिहास
Polonium was discovered by Marie and Pierre Curie in 1898 in Paris.
This element was the first one discovered by the Curies while they were investigating the cause of pitchblende radioactivity.
The dangers of working with radioactive elements were not known when the Curies made their discoveries.
This element was the first one discovered by the Curies while they were investigating the cause of pitchblende radioactivity.
The dangers of working with radioactive elements were not known when the Curies made their discoveries.
इलेक्ट्रॉन प्रति शेल
2, 8, 18, 32, 18, 6
इलेक्ट्रॉन कॉन्फिगरेशन
[Xe] 4f14 5d10 6s2 6p4
Polonium is obtained by irradiating bismuth with high-energy neutrons or protons
भौतिक गुण
अवस्था
ठोस
घनत्व
9.196 g/cm3
गलनांक
527.15 K | 254 °C | 489.2 °F
क्वथनांक
1235.15 K | 962 °C | 1763.6 °F
विलय ऊष्मा
13 कि.जूल/मोल
वाष्पीकरण ऊष्मा
100 कि.जूल/मोल
विशिष्ट ऊष्मा क्षमता
-
पृथ्वी की पपड़ी में प्रचुरता
लागू नहीं
ब्रह्मांड में प्रचुरता
लागू नहीं
सी ए एस संख्या
7440-08-6
PubChem सी.आई.डी. संख्या
लागू नहीं
परमाण्विक गुण
परमाणु का त्रिज्या
168 pm
संयोजी त्रिज्या
140 pm
इलेक्ट्रोनेगेटिविटी
2.00 (पाइलिंग पैमाना)
आयनीकरण ऊर्जाएं
8.417 eV
परमाणु आयतन
22.23 से.मी.३/मोल
तापीय चालकता
0.2 W/cm·K
ऑक्सीकरण स्थितियां
-2, 2, 4, 6
उपयोग
Polonium is used to eliminate static electricity produced during processes such as rolling paper, wire and sheet metal.
Polonium can be mixed or alloyed with beryllium to provide a source of neutrons.
It is also used in anti-static brushes to eliminate dust on photographic film.
Polonium can be mixed or alloyed with beryllium to provide a source of neutrons.
It is also used in anti-static brushes to eliminate dust on photographic film.
Polonium is highly dangerous and radioactive
समस्थानिक
स्थिर आइसोटोप
-अस्थिर समस्थानिक
188Po, 189Po, 190Po, 191Po, 192Po, 193Po, 194Po, 195Po, 196Po, 197Po, 198Po, 199Po, 200Po, 201Po, 202Po, 203Po, 204Po, 205Po, 206Po, 207Po, 208Po, 209Po, 210Po, 211Po, 212Po, 213Po, 214Po, 215Po, 216Po, 217Po, 218Po, 219Po, 220Po