# data[].attributes.body
Space group: Fm-3m

Space group number: 225

Structure: ccp (cubic close-packed)

Cell parameters:

a: 548.47 pm

b: 548.47 pm

c: 548.47 pm

α: 90.000°

β: 90.000°

γ: 90.000°

# data[].attributes.body
Space group: P63/mmc

Space group number: 194

Structure: hcp (hexagonal close-packed)

Cell parameters:

a: 330.9 pm

b: 330.9 pm

c: 527.33 pm

α: 90.000°

β: 90.000°

γ: 120.000°

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Space group: C12/c1

Space group number: 15

Structure: monoclinic

Cell parameters:

a: 550 pm

b: 328 pm

c: 728 pm

α: 90.000°

β: 90.000°

γ: 90.000°

# data[].attributes.body
Space group:

Space group number:

Structure:

Cell parameters:

a: 0 pm

b: 0 pm

c: 0 pm

α: °

β: °

γ: °

# data[].attributes.body
Space group: R3-mh

Space group number: 166

Structure: trigonal

Cell parameters:

a: 430.7 pm

b: 430.7 pm

c: 1127.3 pm

α: 90.000°

β: 90.000°

γ: 120.000°

# data[].attributes.body
Space group:

Space group number: 64

Structure: orthorhombic

Cell parameters:

a: 622.35 pm

b: 445.61 pm

c: 817.85 pm

α: 90.000°

β: 90.000°

γ: 90.000°

# data[].attributes.body
ace group: Fm-3m

Space group number: 225

Structure: ccp (cubic close-packed)

Cell parameters:

a: 383.9 pm

b: 383.9 pm

c: 383.9 pm

α: 90.000°

β: 90.000°

γ: 90.000°

You may view the structure of iridium:

interactively (best, but the page will take longer to load) or

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Actinium is dangerously radioactive. The chemical behaviour of actinium is similar to that of the rare earths, particularly lanthanum. It is found naturally in uranium ores and actinium is 150 times more radioactive than radium.

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Fluorine is a Group 17 element. Fluorine is the most electronegative and reactive of all elements. It is a pale yellow, corrosive gas, which reacts with practically all organic and inorganic substances. Finely divided metals, glass, ceramics, carbon, and even water burn in fluorine with a bright flame. It is not uncommon to see fluorine spelled incorrectly a

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Flerovium was reported informally in January 1999 following experiments towards the end of December 1998 involving scientists at Dubna (Joint Institute for Nuclear Research) in Russia apparently using

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Carbon is a Group 14 element and is distributed very widely in nature. It is found in abundance in the sun, stars, comets, and

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Copper appears in the periodic table at the top of Group 11 above silver and gold. Collectively these are sometimes referred to as the coinage metals, although in modern times these metals are used less frequently than in the past.

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Californium is a radioactive rare earth metal named after the state of California and the University of California (USA). Californium-252 is a strong neutron emitter and one microgram emits 170 million neutrons per minute, making it a biological hazard.

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Beryllium is a Group 2 (IIA) element. It is a metal and has a high melting point. At ordinary temperatures, beryllium resists oxidation in air. Beryllium compounds are very toxic. Its ability to scratch glass is probably due to the formation of a thin layer of the oxide.

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Aluminium is mined in huge scales as bauxite (typically Al₂O₃.2H₂O). Bauxite contains Fe₂O₃, SiO₂, and other impurities.