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physical object > natural object > particle > element > metalloid element > nonmetallic metalloid

nonmetallic metalloid
subject			fact

nonmetallic metalloid	is a kind of metalloid element
element	is a part of Universe
	has synonym atom
particle	obeys uncertainty principle
	has frequency inversely proportional to the wavelength
	has wavelength inversely proportional to its momentum
	has charge
	has mass
physical object	has location or center of gravity
	has angular momentum
	has velocity
	has momentum
	has temperature
	has volume
	has extent
	has material

Kinds of nonmetallic metalloid :

• arsenic (7 kinds, 161 facts) (As, ⁴S_3/2 in ground state) - a metalloid element with two main forms, grey α arsenic and β arsenic
• boron (6 kinds, 146 facts) (B, ²P_1/2 in ground state) - Non-metal with several forms - the most common form is a dark amorphous powder, unreactive to water, acids and alkalis. Rare and fragile element. Nuclear reactions in stars destroy it. Most boron is created in space, by cosmic rays that smash into heavier atoms and split them.
• silicon (5 kinds, 138 facts) (Si, ³P₀ in ground state) - ultrapure crystals of silicon have a blue-grey metallic sheen
• tellurium (3 facts)

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