Unhexhexium 166

Atomic No. Order:

Alphabetic Order:

Periodic Table

2,8,18,32,50,

32,18, 6

O
8

S
16

Se
34

Te
52

Po
84

Uuh
116

Uhh
166

Buh
216

Unhexhexium

Symbol

Uhh
Eka-Uuh, eka-ununhexium
alkaline-earth metal

Atomic Number

166

Relative Atomic Mass
¹²C = 12.0000

[ - ]

Significant Atomic Mass

442
Neutrons 276

Atomic Radius pm

First Ionisation Energy
kJ mol ^-1

Electronegativity

Density kg m ^-3

Molar Volume cm ³

Thermal Conductivity
W m ^-1 K ^-1

Melting Point

Boiling Point

Number of Isotopes

Inner + outer Shells

= 8

Inner + outer Orbitals

110

= 166

Filling Orbital

8p⁴

Ground State Electron Configuration

[Uuo]

6f ¹⁴

7d ¹⁰

8p ⁴

Ground State Electron Configuration with
free Orbitals (n= 2)

0, 0,0,0,0,0,0,2

Ground State Electron Configuration with compressed 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		10	14	18	22	26
8	2	4	2	10	14	18	22	26	30
9

Term Symbol

³P ₂

Discovery

Name Derived From

IUPAC

APSIDIUM	Created:		2002-10-06		166.pdf
	Page update:		2005-09-19		166.pdf