Actinium
Actīnium (-iī, n.) elementum chemicum in systemate periodico cuius symbolus Ac et numerus atomicus 89 est.
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| Nomen, Symbolus, Numerus Atomicus | actinium, Ac, 89 | |||||
Proprietates
Actinium elementum metallicum radioactivum argenteum est. Propter radioactivitatem suum actinium candet in tenebris cum luce veneta mirifica. Solummodo in metallis uranii inventum est ut 227-Ac, cuius periodus radioactiva 21.773 anni est. Una tunna metalli uranii decima pars grammatis actinii continet.
Historia
Actinium in 1899 inventum est ab Andrea-Ludovico Debierne, chemicus Francogallicus qui ab metallo qui Anglice pitchblende vocatur separavit. Fredericus Otto Giesel in 1902 separatim actinium invenit. Ratio actinii similis lanthano est.
Nomen actinii a Graece ἀκτίς (actis, hoc est radius) derivatur.
Notae
Nexus externi
- Hoc elementum apud Patreon: periodic videos
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| 1 H 2 He 3 Li 4 Be 5 B 6 C 7 N 8 O 9 F 10 Ne 11 Na 12 Mg 13 Al 14 Si 15 P 16 S 17 Cl 18 Ar 19 K 20 Ca 21 Sc 22 Ti 23 V 24 Cr 25 Mn 26 Fe 27 Co 28 Ni 29 Cu 30 Zn 31 Ga 32 Ge 33 As 34 Se 35 Br 36 Kr 37 Rb 38 Sr 39 Y 40 Zr 41 Nb 42 Mo 43 Tc 44 Ru 45 Rh 46 Pd 47 Ag 48 Cd 49 In 50 Sn 51 Sb 52 Te 53 I 54 Xe 55 Cs 56 Ba 57 La 58 Ce 59 Pr 60 Nd 61 Pm 62 Sm 63 Eu 64 Gd 65 Tb 66 Dy 67 Ho 68 Er 69 Tm 70 Yb 71 Lu 72 Hf 73 Ta 74 W 75 Re 76 Os 77 Ir 78 Pt 79 Au 80 Hg 81 Tl 82 Pb 83 Bi 84 Po 85 At 86 Rn 87 Fr 88 Ra 89 Ac 90 Th 91 Pa 92 U 93 Np 94 Pu 95 Am 96 Cm 97 Bk 98 Cf 99 Es 100 Fm 101 Md 102 No 103 Lr 104 Rf 105 Db 106 Sg 107 Bh 108 Hs 109 Mt 110 Ds 111 Rg 112 Cn 113 Nh 114 Fl 115 Mc 116 Lv 117 Ts 118 Og | |
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