(Q1109)

English

protactinium

element with symbol Pa and atomic number of 91

  • Pa
  • element 91
  • 91Pa
  • protoactinium
  • brevium

Statements

Protactinium-233.jpg
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231.03588±0.00001 dalton
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Standard Atomic Weights of 14 Chemical Elements Revised (English) (English)
19 October 2020
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1917
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Pa
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[Pa]
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91
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2
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Protactinium
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Protactinium
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Identifiers

546.423
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669.2924
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616-087-9
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27 December 2018
Protactinium (English)
CAS no.: 7440-13-3 (English)
Protactinium
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14675887-n
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