ChemicalElement (MP5)

java.lang.Object
- edu.illinois.cs.cs125.mp5.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	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`	`HYDROGEN`	Element 1, hydrogen.
`static ChemicalElement`	`OXYGEN`	Element 8, oxygen.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	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.
- 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.