Enum Class Element

Method Details

• values

  public static Element[] values()

  Returns an array containing the constants of this enum class, in the order they are declared.

  Returns:

  an array containing the constants of this enum class, in the order they are declared

• valueOf

  public static Element valueOf(String name)

  Returns the enum constant of this class with the specified name. The string must match exactly an identifier used to declare an enum constant in this class. (Extraneous whitespace characters are not permitted.)

  Parameters:

  name - the name of the enum constant to be returned.

  Returns:

  the enum constant with the specified name

  Throws:

  IllegalArgumentException - if this enum class has no constant with the specified name

  NullPointerException - if the argument is null

• getAllOxidationStates

  public int[] getAllOxidationStates()

  Returns a list of all oxidation states the element is found in. The set is by Greenwood and Norman in "Chemistry of the Elements (ISBN:0080379419).

  Returns:

  An array of oxidation states sorted from most negative to most positive.

• getAtomicNumber

  public int getAtomicNumber()

  Returns the atomic number of this Element.

  Returns:

  the atomic number of this Element.

• getPeriod

  public int getPeriod()

  Returns the period in the periodic table of this Element.

  Returns:

  the period in the periodic table of this Element.

• getHillOrder

  public int getHillOrder()

  Returns the Hill Order of this Element. The Hill Order represents the priority by which elements are sorted in molecular formulas. The Hill system is a system of writing chemical formulas such that the number of carbon atoms in a molecule is indicated first, the number of hydrogen atoms next, and then the number of all other chemical elements subsequently, in alphabetical order. When the formula contains no carbon, all the elements, including hydrogen, are listed alphabetically.

  Edwin A. Hill, "On A System Of Indexing Chemical Literature; Adopted By The Classification Division Of The U. S. Patent Office". J. Am. Chem. Soc. 1900, 22(8), 478-494.

  http://en.wikipedia.org/wiki/Hill_system

  Returns:

  the Hill Order of this Element.

• getVDWRadius

  public float getVDWRadius()

  Returns the van der Waals radius of this Element.

  Returns:

  the van der Waals radius of this Element, measured in Angstroms.

• getCovalentRadius

  public float getCovalentRadius()

  Returns the covalent radius of this Element.

  Returns:

  covalent radius, measured in Angstroms.

• getValenceElectronCount

  public int getValenceElectronCount()

  Returns the number of valence electrons for this Element.

  Returns:

  the number of valence electrons for this Element.

• getMinimumValence

  public int getMinimumValence()

  Returns the minimum valence for this Element.

  Returns:

  the minimum valence of this atom.

• getMaximumValence

  public int getMaximumValence()

  Returns the maximum valence for this Element.

  Returns:

  the maximum valence for this Element.

• getCommonValence

  public int getCommonValence()

  Returns the common valence for this Element.

  Returns:

  the common valence for this Element.

• getMaximumCovalentValence

  public int getMaximumCovalentValence()

  Returns the maximum valence for this Element.

  Returns:

  the maximum valence of this element.

• getAtomicMass

  public float getAtomicMass()

  Returns the atomic mass for this Element.

  Returns:

  the atomic mass for this Element, measured in g/mol.

• getCoreElectronCount

  public int getCoreElectronCount()

  Returns the number of core electrons for this Element.

  Returns:

  number of core electrons for this Element.

• getOxidationState

  public int getOxidationState()

  Returns a typical oxidation state for this Element. This information is mostly useful for metals.

  Returns:

  a typical oxidation state for this Element.

• getPaulingElectronegativity

  public float getPaulingElectronegativity()

  Returns the Pauling electronegativity for this Element.

  Returns:

  the Pauling electronegativity for this Element.

• getElementType

  public ElementType getElementType()

  Returns the Element Type for this Element.

  Returns:

  the Element Type for this Element.

• valueOfIgnoreCase

  public static Element valueOfIgnoreCase(String elementSymbol) throws IllegalArgumentException

  Returns the Element that corresponds to the specified element symbol. The case of the element symbol is ignored. Example: FE, fe, Fe represent iron.

  Parameters:

  elementSymbol - element symbol to specify Element.

  Returns:

  the Element specified by the element symbol.

  Throws:

  IllegalArgumentException

• isHydrogen

  public boolean isHydrogen()

  Returns true if this Element is Hydrogen.

  Note: Deuterium (D) and Tritium (T) will return true to this method.

  Returns:

  true if the Element is Hydrogen.

• isHeavyAtom

  public boolean isHeavyAtom()

  Returns true is the Element is an not Hydrogen (or an isotope of Hydrogen).

  This method is the exact opposite of isHydrogen().

  Returns:

  true is Element is not Hydrogen.

• isHeteroAtom

  public boolean isHeteroAtom()

  Returns true if Element is not Hydrogen and not Carbon.

  Returns:

  true if Element is not Hydrogen and not Carbon.

• isMetal

  public boolean isMetal()

  Returns true if ElementType is a metal.

  Returns:

  true if ElementType is a metal.

• isMetalloid

  public boolean isMetalloid()

  Returns true if ElementType is a metalloid.

  Returns:

  true if ElementType is a metalloid.

• isNonMetal

  public boolean isNonMetal()

  Returns true if ElementType is a non-metal.

  Returns:

  true if ElementType is a non-metal.

• isHalogen

  public boolean isHalogen()

  Returns true if Element is a halogen (F, Cl, Br, I, At).

  Returns:

  true if Element is a halogen.

• isChalcogen

  public boolean isChalcogen()

  Returns true if Element is a chalcogen (O, S, Se, Te, Po).

  Returns:

  true if Element is a chalcogen.

• getElementFromHillIndex

  public static Element getElementFromHillIndex(int index)

  Returns the Element that corresponds to the specified Hill Order.

  Parameters:

  index - the Hill Order.

  Returns:

  the Element that corresponds to the specified Hill Order.

  See Also:

  • getHillOrder()