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physical object > natural object > collection of particles > phase of matter > solid > metal > actinide > actinium |
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actinium (Ac, Ac, 2D3/2 in ground state) | ||||
subject | fact |
actinium | has symbol Ac | ![]() |
has symbol Ac | ![]() | |
has longest lived isotope actinium 227 | ![]() | |
has isotope mass range 209 to 232 | ![]() | |
has number of isotopes 26 | ![]() | |
has pronunciation ak-tin-iuhm | ![]() | |
has name origin aktinos from Greek word for 'ray' | ![]() | |
has discovery location Paris, France | ![]() | |
has abundance n.a. in Sun relative to H = 1 × 1012 | ![]() | |
has abundance minute traces in Earth's crust | ![]() | |
has abundance nil in seawater | ![]() | |
has specimen not commerecially available | ![]() | |
has world production probably less than a gram | ![]() | |
has chief source uranium ore contain 0.2 p.p.m. | ![]() | |
has mass absorption coefficient cm2 g-1 for CuKα X-ray diffraction | ![]() | |
has mass absorption coefficient cm2 g-1 for MoKα X-ray diffraction | ![]() | |
has space group Fm3m | ![]() | |
has crystal cell dimension a = 531.1 pm | ![]() | |
has crystal type f.c.c. | ![]() | |
has atomic emission line 383.312 nm for Ac II | ![]() | |
has atomic emission line 408.844 nm for Ac II | ![]() | |
has atomic emission line 416.840 nm for Ac II (strong) | ![]() | |
has atomic emission line 438.641 nm for Ac II (strong) | ![]() | |
has atomic emission line 450.720 nm for Ac II | ![]() | |
has atomic emission line 591.085 nm for Ac II | ![]() | |
has term symbol 2D3/2 in ground state | ![]() | |
has electron configuration [Rn]6d17s2 in ground state | ![]() | |
has mass of element in person nil for a 70 kg average person | ![]() | |
has daily dietary intake nil | ![]() | |
has level in humans nil | ![]() | |
has hazard never encountered normally, dangerous because it is a powerful source of α-radiation, element found only inside nuclear facilities or research laboratories | ![]() | |
has biological role none | ![]() | |
has linear expansion coefficient 14.9 K-1 | ![]() | |
has thermal conductivity 12 W m-1 K-1 at 300 K | ![]() | |
has molar volume 22.6 cm3 | ![]() | |
has heat capacity 27.2 J K-1 mol-1 for solid at constant pressure 0.1 MPa at 298.15 K | ![]() | |
has heat capacity 20.84 J K-1 mol-1 for gas at constant pressure 0.1 MPa at 298.15 K | ![]() | |
has heat of sublimation 51.9 ± 0.5 kJ mol-1 | ![]() | |
has heat of vaporization 418 kJ mol-1 | ![]() | |
has heat of fusion 14.2 kJ mol-1 | ![]() | |
has boiling point 3470 ± 300 K | ![]() | |
has melting point 1320 ± 50 K | ![]() | |
has electronegativity 1.1 Pauling | ![]() | |
has relative atomic mass 227.0728 for 227Ac in units of 12C = 12.000 | ![]() | |
has ionic radii 118 pm for Ac3+ | ![]() | |
has atomic radii 188 pm | ![]() | |
has number of protons 89 | ![]() | |
has registry number 7440-34-8 for Chemical Abstracts System database | ![]() | |
has density 10060 kg m-3 for solid at 293 K | ![]() | |
has synthesis mechanism decay of uranium 235 | ![]() | |
has synthesis mechanism bombardment of radium 236 with neutrons | ![]() | |
has atomic number 89 | ![]() | |
reacts with water to release hydrogen gas | ![]() | |
has discovery date 1899 | ![]() | |
has discoverer Andre Debierne | ![]() | |
has image ![]() | ![]() | |
has definition soft, silvery-white, radioactive metal which glows in the dark | ![]() | |
is a kind of actinide | ![]() | |
is a kind of radioactive element | ![]() | |
actinide | has filling orbital 5f | ![]() |
radioactive particle | has desintegration energy the total energy produced when the particle decays | ![]() |
has decay products the products produced immediately after decay | ![]() | |
has lifetime The average time in which a particle decays | ![]() | |
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 | ![]() | |
column grouped element | has group a column number in the table of the elements | ![]() |
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 actinium :
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