Technetium - Revision history

MDerrick at 14:06, 8 June 2022

2022-06-08T14:06:37Z

← Older revision		Revision as of 10:06, 8 June 2022
Line 7:		Line 7:
	Tc; masurium; technétium (Fr.); tecnezio (It.); tecnécio (Port.); tecnecio (Esp.); Teknetium (Sven.); Technetium (Deut., Ned.); technet (Pol.)		Tc; masurium; technétium (Fr.); tecnezio (It.); tecnécio (Port.); tecnecio (Esp.); Teknetium (Sven.); Technetium (Deut., Ned.); technet (Pol.)

	== ~~Other~~ Properties ==		== Physical and Chemical Properties ==

	Dissolves in nitric acid, aqua regia, concentrated sulfuric acid		Dissolves in nitric acid, aqua regia, concentrated sulfuric acid
Line 20:		Line 20:
	\|-		\|-
	! scope="row"\| Melting Point		! scope="row"\| Melting Point
	\| 2200		\| 2200 C
	\|-		\|-
	! scope="row"\| Density		! scope="row"\| Density
Line 29:		Line 29:
	\|}		\|}

	== ~~Additional Information~~ ==		==Resources and Citations==

	~~Web Elements: [http://www.webelements.com/webelements/elements/text/Tc/key.html Website]~~		* ''Encyclopedia Britannica'', http://www.britannica.com Comment: "technetium" [Accessed 28 Sept. 2005].

	~~== Sources Checked for Data in Record ==~~

	* ''Encyclopedia Britannica'', http://www.britannica.com Comment: "technetium" ~~Encyclopædia Britannica Premium Service.~~ [Accessed 28 Sept. 2005].

	* ''Chemical & Engineering News'', American Chemical Society, Washington DC, 81 (36) , Sept. 8, 2003 Comment: John T. Armstrong, p. 110		* ''Chemical & Engineering News'', American Chemical Society, Washington DC, 81 (36) , Sept. 8, 2003 Comment: John T. Armstrong, p. 110

	* Wikipedia~~, the free encyclopedia, at http://www.wikipedia.com Comment~~: http://en.wikipedia.org/wiki/Technetium (Accessed Sept. 28, 2005)		* Wikipedia: http://en.wikipedia.org/wiki/Technetium (Accessed Sept. 28, 2005)

	* Richard S. Lewis, ''Hawley's Condensed Chemical Dictionary'', Van Nostrand Reinhold, New York, 10th ed., 1993		* Richard S. Lewis, ''Hawley's Condensed Chemical Dictionary'', Van Nostrand Reinhold, New York, 10th ed., 1993
Line 45:		Line 41:
	* ''The Merck Index'', Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 9286		* ''The Merck Index'', Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 9286

	* ~~Website address 1 Comment:~~ Web Elements at http://www.webelements.com/webelements/elements/text/Tc/key.html		* Web Elements at http://www.webelements.com/webelements/elements/text/Tc/key.html

	* ''Van Nostrand's Scientific Encyclopedia'', Douglas M. Considine (ed.), Van Nostrand Reinhold, New York, 1976		* ''Van Nostrand's Scientific Encyclopedia'', Douglas M. Considine (ed.), Van Nostrand Reinhold, New York, 1976

Jruggiero: Text replace - "\[http:\/\/cameo\.mfa\.org\/materials\/fullrecord\.asp\?name=([^\s]+)\s(.*)\]" to "$2"

2016-05-10T17:45:14Z

Text replace - "\[http:\/\/cameo\.mfa\.org\/materials\/fullrecord\.asp\?name=([^\s]+)\s(.*)\]" to "$2"

← Older revision		Revision as of 13:45, 10 May 2016
Line 1:		Line 1:
	== Description ==		== Description ==

	An unstable radioactive element of the [~~http://cameo.mfa.org/materials/fullrecord.asp?name=~~magnesium magnesium] family. Technetium was the first artificially produced element in 1927. Carlo Perrier and Emilio Segre made technetium by the deuteron bombardment of [~~http://cameo.mfa.org/materials/fullrecord.asp?name=~~molybdenum molybdenum]. Naturally occurring technetium is rare on earth, but in 1952, it was detected in the emission of S-type stars. It is used to increase corrosion resistance of [~~http://cameo.mfa.org/materials/fullrecord.asp?name=~~steel steel] and, in medicine, as a radioactive imaging agent for the liver.		An unstable radioactive element of the [[magnesium\|magnesium]] family. Technetium was the first artificially produced element in 1927. Carlo Perrier and Emilio Segre made technetium by the deuteron bombardment of [[molybdenum\|molybdenum]]. Naturally occurring technetium is rare on earth, but in 1952, it was detected in the emission of S-type stars. It is used to increase corrosion resistance of [[steel\|steel]] and, in medicine, as a radioactive imaging agent for the liver.

	== Synonyms and Related Terms ==		== Synonyms and Related Terms ==

Jruggiero: Text replace - "== Authority ==" to "== Sources Checked for Data in Record =="

2016-05-01T23:59:36Z

Text replace - "== Authority ==" to "== Sources Checked for Data in Record =="

← Older revision		Revision as of 19:59, 1 May 2016
Line 33:		Line 33:
	Web Elements: [http://www.webelements.com/webelements/elements/text/Tc/key.html Website]		Web Elements: [http://www.webelements.com/webelements/elements/text/Tc/key.html Website]

	== ~~Authority~~ ==		== Sources Checked for Data in Record ==

	* ''Encyclopedia Britannica'', http://www.britannica.com Comment: "technetium" Encyclopædia Britannica Premium Service. [Accessed 28 Sept. 2005].		* ''Encyclopedia Britannica'', http://www.britannica.com Comment: "technetium" Encyclopædia Britannica Premium Service. [Accessed 28 Sept. 2005].

Unknown user at 12:17, 24 July 2013

2013-07-24T12:17:20Z

New page

== Description ==

An unstable radioactive element of the [http://cameo.mfa.org/materials/fullrecord.asp?name=magnesium magnesium] family. Technetium was the first artificially produced element in 1927. Carlo Perrier and Emilio Segre made technetium by the deuteron bombardment of [http://cameo.mfa.org/materials/fullrecord.asp?name=molybdenum molybdenum]. Naturally occurring technetium is rare on earth, but in 1952, it was detected in the emission of S-type stars. It is used to increase corrosion resistance of [http://cameo.mfa.org/materials/fullrecord.asp?name=steel steel] and, in medicine, as a radioactive imaging agent for the liver.

== Synonyms and Related Terms ==

Tc; masurium; technétium (Fr.); tecnezio (It.); tecnécio (Port.); tecnecio (Esp.); Teknetium (Sven.); Technetium (Deut., Ned.); technet (Pol.)

== Other Properties ==

Dissolves in nitric acid, aqua regia, concentrated sulfuric acid

{| class="wikitable"
|-
! scope="row"| Composition
| Tc (atomic no. 43)
|-
! scope="row"| CAS
| 7440-26-8
|-
! scope="row"| Melting Point
| 2200
|-
! scope="row"| Density
| 11.5
|-
! scope="row"| Molecular Weight
| atomic wt = 98.9062
|}

== Additional Information ==

Web Elements: [http://www.webelements.com/webelements/elements/text/Tc/key.html Website]

== Authority ==

* ''Encyclopedia Britannica'', http://www.britannica.com Comment: "technetium" Encyclopædia Britannica Premium Service. [Accessed 28 Sept. 2005].

* ''Chemical & Engineering News'', American Chemical Society, Washington DC, 81 (36) , Sept. 8, 2003 Comment: John T. Armstrong, p. 110

* Wikipedia, the free encyclopedia, at http://www.wikipedia.com Comment: http://en.wikipedia.org/wiki/Technetium (Accessed Sept. 28, 2005)

* Richard S. Lewis, ''Hawley's Condensed Chemical Dictionary'', Van Nostrand Reinhold, New York, 10th ed., 1993

* ''The Merck Index'', Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 9286

* Website address 1 Comment: Web Elements at http://www.webelements.com/webelements/elements/text/Tc/key.html

* ''Van Nostrand's Scientific Encyclopedia'', Douglas M. Considine (ed.), Van Nostrand Reinhold, New York, 1976

* Random House, ''Webster's Encyclopedic Unabridged Dictionary of the English Language'', Grammercy Book, New York, 1997

* ''The American Heritage Dictionary'' or ''Encarta'', via Microsoft Bookshelf 98, Microsoft Corp., 1998

[[Category:Materials database]]