Metalloids


 * Semi Metals or Metalloids

Names**


 * Usually includes:**
 * Boron (B)**
 * Silicon (Si)**
 * Germanium (Ge)**
 * Arsenic (As)**
 * Antimony (Sb)**
 * Tellurium (Te)**


 * Sometimes included:**
 * Polonium (Po)**
 * Astatine (At)**

semi metals are all semi conductors

Electron Configuration: [|Boron] : 2, 3 [|Silicon] : 2, 8, 4 [|Germanium] : 2, 8, 18, 4 [|Arsenic] : 2, 8, 18, 5 [|Antimony] : 2, 8, 18, 18, 5 [|Tellurium] : 2, 8, 18, 18, 6 [|Polonium] : 2, 8, 18, 32, 18, 6
 * Most of semi-metals are important industrial materials, being used to make transistors and other semiconductor devices, ceramics, solar batteries, and certain polymers.**

Boron: brownish Silicon: gray Germanium: grayish Arsenic: gray Antimony: bluish Tellurium: silverish Polonium: unknown All dull and darkish colors. Not very bright like yellow and red. - Within each period (row) the ionization energy typically increases with the atomic number - Within each group (column) the ionization energy typically decreases with increasing atomic number
 * Physical properties:**
 * Colors:**
 * Ionization energy:**

- As you go down a group the electronegativity decreaces.
Melting Point and Boiling Point. -The melting point decreaces as the atomic mass goes up. For example, Boron has the lowest melting point while Polonium has the highest melting point.