अमेरिशियम
95
Am
समूह
लागू नहीं
आवर्त
7
ब्लॉक
f
प्रोटॉन
इलेक्ट्रॉन्स
न्यूट्रॉन
95
95
148
सामान्य गुण
परमाणु संख्या
95
परमाणु भार
[243]
द्रव्यमान संख्या
243
श्रेणी
ऐक्टिनाइड्स
रंग
रजत
रेडियोधर्मी
हाँ
Named after America
क्रिस्टल की संरचना
सरल हेक्सागोनल
इतिहास
Americium-241 was first identified in 1944 by Glenn T. Seaborg, Ralph A. James, Leon O. Morgan and Albert Ghiorso at the metallurgical laboratory at the University of Chicago.
It was produced by irradiating plutonium with neutrons during the Manhattan Project.
Americium was first isolated as a pure compound by Burris Cunningham in 1945, at the University of Chicago.
It was produced by irradiating plutonium with neutrons during the Manhattan Project.
Americium was first isolated as a pure compound by Burris Cunningham in 1945, at the University of Chicago.
इलेक्ट्रॉन प्रति शेल
2, 8, 18, 32, 25, 8, 2
इलेक्ट्रॉन कॉन्फिगरेशन
[Rn] 5f7 7s2
Americium often enters landfills from discarded smoke detectors
भौतिक गुण
अवस्था
ठोस
घनत्व
13.69 g/cm3
गलनांक
1449.15 K | 1176 °C | 2148.8 °F
क्वथनांक
2880.15 K | 2607 °C | 4724.6 °F
विलय ऊष्मा
लागू नहीं
वाष्पीकरण ऊष्मा
लागू नहीं
विशिष्ट ऊष्मा क्षमता
-
पृथ्वी की पपड़ी में प्रचुरता
लागू नहीं
ब्रह्मांड में प्रचुरता
लागू नहीं
सी ए एस संख्या
7440-35-9
PubChem सी.आई.डी. संख्या
लागू नहीं
परमाण्विक गुण
परमाणु का त्रिज्या
173 pm
संयोजी त्रिज्या
180 pm
इलेक्ट्रोनेगेटिविटी
1.3 (पाइलिंग पैमाना)
आयनीकरण ऊर्जाएं
5.9738 eV
परमाणु आयतन
17.78 से.मी.३/मोल
तापीय चालकता
0.1 W/cm·K
ऑक्सीकरण स्थितियां
2, 3, 4, 5, 6
उपयोग
Americium is used in commercial ionization chamber smoke detectors, as well as in neutron sources and industrial gauges.
Americium-241 has been used as a portable source of both gamma rays and alpha particles for a number of medical and industrial uses.
It is also used as a target material in nuclear research to make even heavier elements.
Americium-241 has been used as a portable source of both gamma rays and alpha particles for a number of medical and industrial uses.
It is also used as a target material in nuclear research to make even heavier elements.
Americium is harmful due to its radioactivity
समस्थानिक
स्थिर आइसोटोप
-अस्थिर समस्थानिक
229Am, 231Am, 232Am, 233Am, 234Am, 235Am, 236Am, 237Am, 238Am, 239Am, 240Am, 241Am, 242Am, 243Am, 244Am, 245Am, 246Am, 247Am, 248Am, 249Am