edu.illinois.cs.cs125.spring2019.mp4.lib

Class ChemicalElement

java.lang.Object

edu.illinois.cs.cs125.spring2019.mp4.lib.ChemicalElement

public final class ChemicalElement
extends java.lang.Object

Represents an element, that is, a type of atom.

You do not need to modify this class, but you will need to use its methods.

Field Summary

Fields

Modifier and Type	Field and Description
static ChemicalElement	BROMINE Element 35, the third halogen, bromine.
static ChemicalElement	CARBON Element 6, carbon.
static ChemicalElement	CHLORINE Element 17, the second halogen, chlorine.
static ChemicalElement	FLUORINE Element 9, the first halogen, fluorine.
static ChemicalElement	HELIUM Element 2, the first noble gas, helium.
static ChemicalElement	HYDROGEN Element 1, hydrogen.
static ChemicalElement	OXYGEN Element 8, oxygen.

Method Summary

Modifier and Type	Method and Description
java.lang.String	getSymbol() Gets the element's symbol on the periodic table.
int	getValence() Gets the element's valence, that is, how many bonds an atom of this element should have.
double	getWeight() Gets the element's average atomic mass.
java.lang.String	toString() Gets a string representation of the element object.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

CARBON

public static final ChemicalElement CARBON

Element 6, carbon.

HYDROGEN

public static final ChemicalElement HYDROGEN

Element 1, hydrogen.

OXYGEN

public static final ChemicalElement OXYGEN

Element 8, oxygen.

FLUORINE

public static final ChemicalElement FLUORINE

Element 9, the first halogen, fluorine.

CHLORINE

public static final ChemicalElement CHLORINE

Element 17, the second halogen, chlorine.

BROMINE

public static final ChemicalElement BROMINE

Element 35, the third halogen, bromine.

HELIUM

public static final ChemicalElement HELIUM

Element 2, the first noble gas, helium.

Method Detail

getSymbol

public java.lang.String getSymbol()

Gets the element's symbol on the periodic table.

Returns:

The one- or two-letter element symbol.

getWeight

public double getWeight()

Gets the element's average atomic mass.

Returns:

The atomic mass in grams per mole.

getValence

public int getValence()

Gets the element's valence, that is, how many bonds an atom of this element should have.

Returns:

The valence.

toString

public java.lang.String toString()

Gets a string representation of the element object.

Overrides:

toString in class java.lang.Object

Returns:

The stringified element.