Group+03

°Group 3 of the Periodic Table° This group consist of the elements Scandium(Sc), Yttrium(Y), Lanthanum(La), and Actinium(Ac). All of them are transition metal and they all burn fairly easily. Mimi D **Scandium (Sc) ** __**Basic Information:**__​ Atomic Number: 21 Symbol: Sc. Atomic Weight: 44 Isotopes: 13 It is a: Transition Metal __** History: **__ Scandium was found in 1879 by Lars F. Nelson, a Swedish chemist.

__**Characteristics:**__ Scandium'scolor is a light silvery white. It's a soft, light metal which becomes slightly tinted yellow/pink when it becomes exposed to air and it has a low density and reacts with many acids. And it burns easily when ignited.

__**Uses:**__ Scandium is used a lot in sports equipment and to make high intensity light bulbs. It can also be used in space industry materials. Scandium is one of the rare chemicals, that can be found in houses in equipment such as color television florescent lights.

Boiling Point: 2,830 ° c Melting Point: 1,540 ° c Conductivity: Electrical - 0.0177 Thermal - 0.158 Density:2.99 State at Room Temp: Solid Solubility: In water Scandium is very soluble but it is insoluble in EtOH Ductility: It is ductile Malleability: It is malleable
 * __Physical Properties:__**

Reactivity with Oxygen: It becomes a lightly yellow-ish ting when exposed to air Flammability: It burns very easily General Reactivity: It mostly reacts mildly with most acids ​ **Yttrium (Y) ** __**Characteristics:**__ Silvery metal, which is stable in air because of an oxide film that forms on its surface. __**Basic Information:**__ Atomic Number: 39 Atomic Weight: 88.906 Isotopes: 31 It is a: Metal
 * __Chemical Properties:__**

Yttrium was discovered by Johan Gadolin in 1794 by a near by town of Ytterby, Sweden. It's named after the town Ytterby. Johan Gadloin was a Finnish chemist.
 * __History:__**

The largest use of the element is as its oxide yttria, Y 2 O 3, which is used in making red phosphors for color television picture tubes.
 * __Uses:__**

Melting Point: 1,522 ° c Boiling Point: 3,345 ° c Density: 4.47 Conductivity: Thermal - .0166 Electrical - .172 State at Room Temp: Solid Solubility: It is soluble Ductility: Yes Malleability: Yes
 * __Physical Properties:__**

__**Chemical Properties:**__ Reactivity with oxygen: Flammability: General reactivity:

Lanthanum (La)

__**Basic Information:**__ Atomic Number**:** 57 Atomic Weight**:** 138 Boiling Point: 3464°C Isotopes: Naturally occurring lanthanum is composed of one stable (139La) and one radioactive (138La) isotope, with the stable isotope, 139La

__**History:**__ Lanthanum was discovered by Carl Gustaf Mosander, a Swedish chemist, in 1839.

__**Uses:**__ Lanthanum is one of the rare earth elements used to make carbon arc lights which are used in the motion picture industry for studio lighting and projector lights. Lanthanum also makes up about 25% of Misch metal, a material that is used to make flints for lighters.

__**Physical Properties**__: Melting Point: 918°C Boiling Point: Melting Point: Conductivity: Electrical - 0.0126 Thermal - 0.135 Density: 6.15g Ductility:Yes Mallebility:Yes

__**Chemical Properties:**__ Reactivity with oxygen: Flammability: General reactivity:

__**Characteristics:**__ Soft silvery white transition metal that rapidly tarnishes in air. It will burn easily if ignited.

 Actinium(Ac)

**Atomic Number:** 89
 * Atomic Weight:** 227
 * Melting Point:** 1324 K (1051°C or 1924°F)
 * Boiling Point:** 3471 K (3198°C or 5788°F)
 * Density:** 10.07 grams per cubic centimeter
 * Phase at Room Temperature:** Solid
 * Element Classification:** Metal

__**History :**__ Actinium was discovered in 1899 by André-Louis Debierne, a French chemist, while experimenting with new methods of separating rare earth oxides. ​

Fun Facts Scandium originates from the Latin word Scandia meaning "Scandinavia" Yttrium can be used to make microwave filters Actiniums name originates from the Greek word 'aktinos' meaning ray or beam.