<dictionary xmlns="http://www.xml-cml.org/schema"
	id="blueobelisk-dictionary" title="BlueObelisk Dictionary"
        convention="bodr:dictionary">

	<annotation>
		<documentation>
			<metadata name="dc:date" content="$Date: 2005/10/21 16:40:02 $"/>
                        <metadata name="dc:license" content="The MIT License" />
		</documentation>
		<appinfo>
			<contributor id="elw">Egon Willighagen</contributor>
			<contributor id="cn">Carsten Niehaus</contributor>
		</appinfo>
	</annotation>

	<description>
		This dictionary describes descriptors used in the BlueObelisk datarepository.
	</description>

	<entry id="atomicNumber" term="Atomic number of an element">
		<annotation>
			<documentation>
				<metadata name="dc:contributor" content="elw"/>
			</documentation>
		</annotation>
		<definition>
			The number of the element. This is the number of protons of an atom.
		</definition>
	</entry>
	<entry id="symbol" term="The IUPAC-symbol of an element">
		<annotation>
			<documentation>
				<metadata name="dc:contributor" content="elw"/>
			</documentation>
		</annotation>
		<definition>
			The symbol of an element. Every chemical element has a IUPAC-approved 
			symbol which consists of one, two or three letters.
		</definition>
	</entry>
	<entry id="name" term="The name of an element">
		<annotation>
			<documentation>
				<metadata name="dc:contributor" content="elw"/>
			</documentation>
		</annotation>
		<definition>
			Every chemical element has an IUPAC-approved name.
		</definition>
	</entry>
	<entry id="mass" term="Atomic mass of an element">
		<annotation>
			<documentation>
				<metadata name="dc:contributor" content="elw"/>
			</documentation>
		</annotation>
		<definition>
			IUPAC Official Masses
		</definition>
	</entry>
	<entry id="exactMass" term="Exact atomic mass of an element">
		<annotation>
			<documentation>
				<metadata name="dc:contributor" content="elw"/>
			</documentation>
		</annotation>
		<definition>
			exact masses of the most common isotopes for each element
		</definition>
	</entry>
	<entry id="ionization" term="Ionization potential of an element">
		<annotation>
			<documentation>
				<metadata name="dc:contributor" content="elw"/>
			</documentation>
		</annotation>
		<definition>
			Ionization potential
		</definition>
	</entry>
	<entry id="electronAffinity" term="Electron affinity of an element">
		<annotation>
			<documentation>
				<metadata name="dc:contributor" content="elw"/>
			</documentation>
		</annotation>
		<definition>
			Electron affinity of an element
		</definition>
	</entry>
	<entry id="electronegativityPauling" term="Electronegativity after Pauling">
		<annotation>
			<documentation>
				<metadata name="dc:contributor" content="elw"/>
			</documentation>
		</annotation>
		<definition>
			Electronegativity after Pauli. On this scale, the most electronegative chemical element (fluorine) is given an electronegativity value of 3.98; the least electronegative element (francium) has a value of 0.7, and the remaining elements have values in between. 
		</definition>
	</entry>
	<entry id="electronicConfiguration" term="Electronic configuration">
		<annotation>
			<documentation>
				<metadata name="dc:contributor" content="cn"/>
			</documentation>
		</annotation>
		<definition>
			For example: Xe 4f14 5d10 6s2 6p2. In this example, Xe stands for the electronic configuration of Xenon.
		</definition>
	</entry>
	<entry id="acidicbehaviour" term="Acidic behaviour">
		<annotation>
			<documentation>
				<metadata name="dc:contributor" content="cn"/>
			</documentation>
		</annotation>
		<definition>
			Acidic behaviour of the elements. 0 means acidic, 1 means basic, 2 means neutral and 3 means amphoteric
		</definition>
	</entry>
	<entry id="group" term="The group in which the element is in">
		<annotation>
			<documentation>
				<metadata name="dc:contributor" content="cn"/>
			</documentation>
		</annotation>
		<definition>
			For example, an '1' means the element is in the first group. Together with the block you can
			find out if that means 1a or 1b.
		</definition>
	</entry>
	<entry id="crystalstructure" term="Most common crystal structure.">
		<annotation>
			<documentation>
				<metadata name="dc:contributor" content="cn"/>
			</documentation>
		</annotation>
		<definition>
			# hcp: hexagonal close packed
			# fcc: face centered cubic
			# bcc body centered cubic
			# hdp: hexagonal close packed
			# ccp: cubic close packed
			# d  : diamond
			# sc : simple cubic
			# tet: tetragonal
			# rh : rhombohedral
			# or : orthorhombic
			# mono: monoclinic
		</definition>
	</entry>
	<entry id="period" term="Period of the element in the periodic table">
		<annotation>
			<documentation>
				<metadata name="dc:contributor" content="cn"/>
			</documentation>
		</annotation>
		<definition>
			
		</definition>
	</entry>
	<entry id="family" term="the family of the element in the periodic table">
		<annotation>
			<documentation>
				<metadata name="dc:contributor" content="cn"/>
			</documentation>
		</annotation>
		<definition>
			# Alkali_Earth
			# Alkaline_Earth
			# Non-Metal
			# Metalloids
			# Transition
			# Other_Metal
			# Halogene (group 7)
			# Noblegas (group 8)
			# Rare_Earth (the so called f-Block)
		</definition>
	</entry>
	<entry id="periodTableBlock" term="Block of the element in the periodic table">
		<annotation>
			<documentation>
				<metadata name="dc:contributor" content="cn"/>
			</documentation>
		</annotation>
		<definition>
			Each element has a location in the periodic table. The reason lays in the 
			the orbital structure of the element. This creates four block in the table:
			s,p,d and f, named after the orbit in which the last electron is located.
		</definition>
	</entry>
	<entry id="boilingpoint" term="Boilingpoint of an element">
		<annotation>
			<documentation>
				<metadata name="dc:contributor" content="cn"/>
			</documentation>
		</annotation>
		<definition>
			The boilingpoint of an element is the temperatur at 101.3hPa at which
			the element is becomming vaporous.
		</definition>
	</entry>
	<entry id="meltingpoint" term="Melting point of an element">
		<annotation>
			<documentation>
				<metadata name="dc:contributor" content="cn"/>
			</documentation>
		</annotation>
		<definition>
			The meltingpoint of an element is the temperatur at 101.3hPa at which
			the element is becomming liquid.
		</definition>
	</entry>
	<entry id="nameOrigin" term="Origin of the name of an element">
		<annotation>
			<documentation>
				<metadata name="dc:contributor" content="cn"/>
			</documentation>
		</annotation>
		<definition>
			The name of an element has a origin. Often the name comes from
			old legends (see Cobalt) but sometime it is named after somebody (Einsteinium).
		</definition>
	</entry>
	<entry id="radiusCovalent" term="Covalent radius an element">
		<annotation>
			<documentation>
				<metadata name="dc:contributor" content="elw"/>
			</documentation>
		</annotation>
		<definition>
			The covalent radius for the element A is half the distance of the compound A-A.
		</definition>
	</entry>
	<entry id="radiusVDW" term="van-der-Waals radius of an element">
		<annotation>
			<documentation>
				<metadata name="dc:contributor" content="elw"/>
			</documentation>
		</annotation>
		<definition>
			The van-der-Waals-radius is <!-- good definition missing! -->
		</definition>
	</entry>
	<entry id="elementColor" term="Color of an element">
		<annotation>
			<documentation>
				<metadata name="dc:contributor" content="elw"/>
			</documentation>
		</annotation>
		<definition>
			Conventional color for structure visualization
		</definition>
	</entry>
	<entry id="discoveryDate" term="Date of discovery">
		<annotation>
			<documentation>
				<metadata name="dc:contributor" content="cn"/>
			</documentation>
		</annotation>
		<definition>
			In the given year the date has been described first. A "0" means that the element has always been known to mankind (for example Carbon).		</definition>
	</entry>
</dictionary>
