Unhexquadium

Unhexquadium, ₁₆₄Uhq
General properties
Unhexquadium in the periodic table
	unhextrium ← unhexquadium → unhexpentium
Atomic number (Z)	164
Group	group 10
Period	period 8
Block	d-block
Element category	transition metal (predicted)
Electrons per shell	2, 8, 18, 32, 50, 32, 18, 4
Physical properties
Phase at STP	Uhq:
Density (near r.t.)	46 g/cm3
Atomic properties
Oxidation states	Template:Infobox element/symbol-to-oxidation-state: Symbol "Uhq" not known
Ionization energies	1st: 690 kJ/mol ; ;
Other properties
Natural occurrence	Uhq:
Main isotopes of unhexquadium
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Unhexquadium is a radioactive element that has not been discovered. It will have 164 protons and 318 neutrons. Interest in the chemistry of unhexquadium is largely prompted by predictions that the isotope ⁴⁸²Uhq (with 164 protons and 318 neutrons), would be at the center of a possible second island of stability (the first being centered on ³⁰⁶Ubb or ²⁹⁸Fl ).^[1]^[2]^[3]

Unhexquadium Media

Pekka Pyykkö's 172-element (extended) periodic table.
Kulsha's first suggested form
Kulsha's second suggested form
Energy eigenvalues (in eV) for the outermost electrons of elements with Z = 100 through 172, predicted using Dirac–Fock calculations. The − and + signs refer to orbitals with decreased or increased azimuthal quantum number from spin–orbit splitting respectively: p− is p1/2, p+ is p3/2, d− is d3/2, d+ is d5/2, f− is f5/2, f+ is f7/2, g− is g7/2, and g+ is g9/2.
Energy eigenvalues for the 1s, 2s, 2p1/2 and 2p3/2 shells from solutions of the Dirac equation (taking into account the finite size of the nucleus) for Z = 135–175 (–·–), for the Thomas-Fermi potential (—) and for Z = 160–170 with the self-consistent potential (---).