Hafnium

=**Hafnium (Hf)**= Kierra Wolverton

Melting Point: **2233 degrees Celcius** Boiling Point: **4603 degrees Celcius** Normal Phase: **Solid** Cost: **$100-$500 for 1 pound**
 * Atomic Number:** 72
 * Atomic Mass:** 178.49
 * of Protons: **72**
 * of Neutrons: 106
 * of Electrons: **72**

Classification: **Metal This element belongs to the** Transition Metal **family**

Origin of Name: **Lame name for Copenhagen in 1923** Discovered by: **D. Coster and G. von Hevesey**

Neat Facts...!**
 * Used for rector control rods in nuclear submarines
 * **Used in gas-filled and incandescent lamps**
 * Bright, silvery-gray metal
 * **Common element in Earth's crust**
 * Toxic and dangerous when inhaled
 * **Highly flammable**