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siderophile element
subject			fact

siderophile element	has occurrence in planet metallic core and associated with iron
	has definition element that tend to concentrate in metallic iron
	is a kind of planetary 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 siderophile element :

• carbon (5 kinds, 158 facts) (C, ³P₀ in ground state) - pure forms occur as graphite, diamond and buckminsterfullerene C₆₀
• cobalt (7 kinds, 166 facts) (Co, ⁴F_9/2 in ground state) - lustrous, silvery-blue, hard metal which is also ferromagnetic. Cobalt 60 is an important radioisotope
• germanium (7 facts)
• gold (6 facts)
• iridium (3 facts)
• iron (8 kinds, 175 facts) (Fe, ⁵D₄ in ground state, ferrum = iron from Latin) - lustrous, silvery and soft or workable metal when absolutely pure
• nickel (11 kinds, 190 facts) (Ni, ³F₄ in ground state) - corrosion resistant, silvery-white, lustrous, malleable and ductile metal
• phosphorus (4 kinds, 135 facts) (P, ⁴S_3/2 in ground state) - soft and flammable white solid, the red form is usually non-flammable
• platinum (6 facts)

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