Checked content


English: drawn by me
Date 17 December 2005 (original upload date)
Source Transferred from en.wikipedia; transferred to Commons by User:Waihorace using CommonsHelper.
Author Original uploader was E kwan at en.wikipedia
( Reusing this file)

Released into the public domain (by the author).


Converted to SVG.svg This chemical image could be recreated using vector graphics as an SVG file. This has several advantages; see Commons:Media for cleanup for more information. If an SVG form of this image is already available, please upload it. After uploading an SVG, replace this template with {{ vector version available|new image name.svg}}.
PD-icon.svg This work has been released into the public domain by its author, E kwan at the wikipedia project. This applies worldwide.

In case this is not legally possible:
E kwan grants anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.

Learn more

SOS Childrens Villages aims to make Wikipedia suitable for young learners. In 133 nations around the world, SOS Childrens Villages works to bring better education and healthcare to families in desperate need of support. There are many ways to help with SOS Children.