للجدول الدوري  electronic configuration تغريد هاشم النور.pdf

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معلومات جديدة للجدول الدوري     New information for the periodic table

تغريد هاشم النور    Taghreed Hashim Al-Noor

أسرع طريقة لكتابة الترتيب الإلكتروني    للانثانيدات

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electronic configuration of (Lanthanides)

  • lanthanides are also known as "rare earths" or "rare-earth elements".

Lanthanides

58
Ce
140

59
Pr
141

60
Nd
144

61
Pm
145

62
Sm
150

63
Eu
152

64
Gd
157

65
Tb
159

66
Dy
163

67
Ho
165

68
Er
167

69
Tm
169

70
Yb
173

71
Lu
175

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The general electronic configuration of f- block elements

(Lanthanoids) is

  الترتيب الإلكتروني العام لعناصر   اللانثانات

   Ln  : [Xe] 4f 1 – 14 5d 0- 1 6s2

 

58Ce: 1s22s22p63s23p64s23d104p65s24d105p66s25d14f1

Or

58Ce: [Xe]6s25d14f1                

59Pr: 1s22s22p63s23p64s23d104p65s24d105p66s24f3

Or              Noble Gas [Xe  ]

59Pr: [Xe]6s24f3

The lanthanides f block of the Periodic Table.

The most common oxidation state of lanthanides is +3.

The principal oxidation state of lanthanides  [Ln ]   is +3.   

 

Cerium is +4.

Significant solution chemistry of Ln2+ is essentially confined to SmII, EuII, YbII

 

We can find electronic configuration for any  Ln +3 as

Electron Configuration for the      Ln +3    Series   

Noble Gas [Xe  ]  4f 

      

  1. Ln +3   [Xe]  4f 1 – 14   .E   

Atomic number for any  lanthanides  - 57     equal   number of electron in  4f

             58Ce +3: [Xe] 4f

57  =1-58

                

   : [Xe]6s24f 3

             59 Pr +3: [Xe] 4f

57  =2-59

Outcomes