extended periodic table
 

 Atomic No. Order:
next element

 Alphabetic Order:
previous element

Periodic Table

 

  Sc
 21 		Y
39 		  La
  57  		  Ac
 89 		Ubu
121 		Usu
171 		Bbu
221

Actinium

Symbol Ac
Atomic Number 89
Relative Atomic Mass
12C = 12.0000 		[ 227 ]
227.0277
21.77(2) year
Significant Atomic Mass 228
Neutrons  139
Atomic Radius  pm 188
First Ionisation Energy
kJ mol -1 		499
Electronegativity 1.1
Density   kg m -3 10060 [293 K]
Molar Volume cm 3 22.6
Thermal Conductivity
W m -1 K -1 		12 [300 K]
Melting Point K 1320 ± 50
Boiling Point K 3470 ± 300
Number of Isotopes 26
Inner + outer Shells
  4   +   3    = 7
Inner + outer Orbitals
  60   +   29    =  89
   

???

  Algorythm of Software
ground state Algorythm ground state

  2, 8, 18, 32,  

 18, 9, 2   

  2, 8, 18, 32,  

 19, 8, 2   

Distribution of electrons 
 
s
p
d
f
1
2
 

 

 

2
2
6
 

 

3
2
6
10
 
4
2
6
10
14
5
2
6
10
 
6
2
6
1

 

7
2
 

 

 

  s p d f
1 2  

 

 

2 2 6  

 

3 2 6 10  
4 2 6 10 14
5 2 6 10 1
6 2 6  

 

7 2  

 

 

Filling Orbital 
  6d 1   
  5f 1   
Ground State Electron Configuration
[Rn]   5d 10      6d 1     7s 2 
[Rn]   5f 1     6p 6  7s 2 

 

Ground State Electron Configuration with free Orbitals (n= 29)

  0, 0, 0, 0, 14, 9, 6 

  0, 0, 0, 0, 13, 10, 6  

free Orbitals Algorythm free Orbitals

 

Ground State Electron Configuration with compressed Orbitals  (n= 162)

 0, 0, 0, 0, 18, 54, 90  

 0, 0, 0, 0, 18, 54, 90  

compressed Orbitals Algorythm compressed Orbitals
 
Singularity
280 =  60 + 29 + 29 + 162

 

 
s
p
d
 f
g
h
i
j
1
2

 

 

 

 

 

 

 

2
2
6

 

 

 

 

 

 

3
2
6
10

 

 

 

 

 

4
2
6
10

14

 

 

 

 

5
2
6
10
1
13
18

 

 

 

6
2
6
10

14

18
22

 

 

7
2

6

10
14
18
22
26

 

8
 

 

 

 

 

 

 

 

 
Term Symbol 2D 3/2
Discovery Discovered by A. Debierne (Paris, France) in 1899
Name Derived From Greek aktinos meaning 'ray'

line

APSIDIUM ©    Created:      2002-08-15       PDF
089.pdf

Top   Home

 Page update:    2003-04-02