Unpentoctium 158

Atomic No. Order:

Alphabetic Order:

Periodic Table

2, 8, 18, 32, 50,

32, 14, 2

Fe
26

Ru
44

Os
76

Hs
108

Upo
158

Bno
208

Unpentoctium

Symbol

Upo
eka-hassium
transition metal

Atomic Number

158

Relative Atomic Mass
¹²C = 12.0000

[ - ]

Significant Atomic Mass

420
Neutrons 262

Atomic Radius pm

First Ionisation Energy
kJ mol^-1

Electronegativity

Density kg m^-3

Molar Volume cm³

Thermal Conductivity
W m^-1 K^-1

Melting Point

Boiling Point

Number of Isotopes

Inner + outer Shells

Inner + outer Orbitals

110

158

Filling Orbital

7d ⁶

Ground State Electron Configuration

[Uuo]

5g ¹⁸

6f¹⁴

7d⁶

8s²

Ground State Electron Configuration with
free Orbitals (n=10)

0, 0, 0, 0, 0, 0, 4, 6

Ground State Electron Configuration with
comp. Orbitals (n= 240)

0, 0, 0, 0, 0, 40, 80, 120

Singularity

408

110

240

	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		14	18
6	2	6	10		14	18	22
7	2	6	6	4	14	18	22	26
8	2	6	10		14	18	22	26	30
9

Term Symbol

Discovery

Name Derived From

IUPAC

APSIDIUM	Created:		2002-10-03		158.pdf
	Page update:		2005-09-17		158.pdf