Krypton - Revision history

DavidB4-bot: /* top */clean up & uniformity

2016-07-13T15:05:51Z

top: clean up & uniformity

Dvergne at 04:15, October 15, 2012

2012-10-15T04:15:40Z

ElizabethK: Now that the template is changed ...

2008-11-27T04:41:35Z

Now that the template is changed ...

ElizabethK at 20:17, November 15, 2008

2008-11-15T20:17:50Z

Jallen: New page: {{Element | name=Krypton| symbol=Kr | anumber=36 | amass=83.8 amu | noe=36 | class=Noble Gas | cstructure=Cubic | color=Colorless | date=1898 | discname= Sir William Ramsay | origname=...

2007-05-17T06:46:06Z

New page: {{Element | name=Krypton| symbol=Kr | anumber=36 | amass=83.8 amu | noe=36 | class=Noble Gas | cstructure=Cubic | color=Colorless | date=1898 | discname= Sir William Ramsay | origname=...

New page

{{Element | name=Krypton| symbol=Kr | anumber=36 | amass=83.8 amu | noe=36 | class=Noble Gas | cstructure=Cubic | color=Colorless | date=1898 | discname= Sir [[William Ramsay]] | origname=From the Greek word ''kryptos'' (hidden) | uses=Lighting | obtained=Production of liquid air}}

← Older revision		Revision as of 15:05, July 13, 2016
Line 6:		Line 6:

	[[Category:Elements]]		[[Category:Elements]]
−	{{~~Template:~~Periodic table}}	+	{{Periodic table}}

← Older revision		Revision as of 04:15, October 15, 2012
Line 6:		Line 6:

	[[Category:Elements]]		[[Category:Elements]]
		+	{{Template:Periodic table}}

@@ Line 1: / Line 1: @@
-{{Element | name=Krypton| symbol=Kr | anumber=36 | amass=83.8 amu | noe=36 | class=Noble Gas | cstructure=Face-centered cubic | color=Colorless | date=1898 | discname= Sir [[William Ramsay]] and M. W. Travers | origname=From the Greek word ''kryptos'' (hidden) | uses=Lighting and scientific standards | obtained=Production of liquid air}}
+{{Element | name=Krypton| symbol=Kr | anumber=36 | amass=83.8 amu | noe=36 | class=Noble Gas | cstructure=Face-centered cubic | density=.0037493 g/cm^3 | color=Colorless | stableisotopes=6 | date=1898 | discname= Sir [[William Ramsay]] and M. W. Travers | origname=From the Greek word ''kryptos'', hidden | uses=Lighting and scientific standards | obtained=Production of liquid air}}
-'''Krypton''' is an [[element]] in the "[[noble gas]]" class (or "inert gas") of the [[periodic table of the elements|periodic table]].  It is colorless and odorless. It is almost (but not completely) chemically inert.  It has six stable isotopes.
+'''Krypton''' is an [[element]] in the "[[noble gas]]" class (or "inert gas") of the [[periodic table of the elements|periodic table]].  It is colorless and odorless. It is almost (but not completely) chemically inert.  Its density as a gas (at standard temperature and pressure) is .0037493 g/cm^3, about 3 times that of air.  As a solid (below 116 degrees K) its density is 2.823 g/cm^3.
-It is noteworthy in that one of its spectral lines is used as the official scientific definition of length&mdash;1 meter is 1650763.73 wavelengths.  (Prior to that, the meter was defined as the distance between two lines scratched on the "International Standard Meter stick".)
+It is noteworthy in that, between 1960 and 1983, one of its spectral lines was used as the official scientific definition of length&mdash;1 meter was 1650763.73 wavelengths.  (Prior to that, the meter was defined as the distance between two lines scratched on the "International Standard Meter stick".  Since 1983, the unit of length has been defined in terms of time.)

← Older revision		Revision as of 20:17, November 15, 2008
Line 1:		Line 1:
−	{{Element \| name=Krypton\| symbol=Kr \| anumber=36 \| amass=83.8 amu \| noe=36 \| class=Noble Gas \| cstructure=~~Cubic~~ \| color=Colorless \| date=1898 \| discname= Sir [[William Ramsay]] \| origname=From the Greek word ''kryptos'' (hidden) \| uses=Lighting \| obtained=Production of liquid air}}	+	{{Element \| name=Krypton\| symbol=Kr \| anumber=36 \| amass=83.8 amu \| noe=36 \| class=Noble Gas \| cstructure=Face-centered cubic \| color=Colorless \| date=1898 \| discname= Sir [[William Ramsay]] and M. W. Travers \| origname=From the Greek word ''kryptos'' (hidden) \| uses=Lighting and scientific standards \| obtained=Production of liquid air}}
		+
		+	'''Krypton''' is an [[element]] in the "[[noble gas]]" class (or "inert gas") of the [[periodic table of the elements\|periodic table]]. It is colorless and odorless. It is almost (but not completely) chemically inert. It has six stable isotopes.
		+
		+	It is noteworthy in that one of its spectral lines is used as the official scientific definition of length—1 meter is 1650763.73 wavelengths. (Prior to that, the meter was defined as the distance between two lines scratched on the "International Standard Meter stick".)