Lanthanida

Lanthanida sunt successio 15 elementorum numeris atomicis a 57 usque ad 71. Communiter elementa abbreviantur Ln. Classis elementorum, cuius pars successio est, et interdum Sc et Y, vocatur elementa rara terrena (breviter TR pro terra rara seu REE pro Anglico rare earth elements). In hac successione 4f-submembrana exercetur. Quia submembrana magis intra- quam extramembranam atomi est, elementa multa se in proprio similant. Plerumque Ln³⁺ ionta exercent a extraelectronibus (5d¹6s²) amittere. Quia f-electrona onus nuclei male defendunt, ionta diminuuntur et ^[1] numeri atomici augentur. Novis artibus chromatographicis possibile est elementa scindere.

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

Notae

1. Brown Rogers General, Organic & Biochemistry 2nd Ed p79

Elementa chemica: series paginarum brevium

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 Elementum • Systema periodicum