Periodic table’s seventh row finally complete

Four new chemical elements have been added to the periodic table, completing its seventh period (or row) – the first to be included in the table since 2011, when elements 114 and 116 were added

PERIODIC TABLE OF ELEMENTS (updated)

Arrangement of chemical elements, ordered by their atomic number, electron configurations, and
recurring chemical properties (generally, elements are metals on lefthand side, and non-metals on righthand side)

H 
Li 
Na 
K 
Rb 
Cs 
Fr 
Be 
Mg 
Ca 
Sr 
Ba 
Ra 
Sc 
Y 
La 
Ac 
Ti 
Zr 
Hf 
Rf 
Ce 
Th 
V 
Nb 
Ta 
Db 
Pr 
Pa 
Cr 
Mo 
W
Sg
Nd
U
Mn
Tc
Re
Bh
Pm
Np
Fe
Ru
Os
Hs
Sm
Pu
Co
Rh
Ir
Mt
Eu
Am
Ni
Pd
Pt
Ds
Gd
Cm
Cu
Ag
Au
Rg
Tb
Bk
Zn
Cd
Hg
Cn
Dy
Cf
B
AI
Ga
In
TI
Uut
Ho
Es
C
SI
Ge
Sn
Pb
FI
Er
Fm
N
P
As
Sb
Bi
Uup
Tm
Md
O
S
Se
Te
Po
Lv
Yb
No
F
CI
Br
I
At
Uus
Lu
Lr
He
Ne
Ar
Kr
Xe
Rn
Uuo

Colour key

Alkali metal

Actinide

Noble gas

Alkaline earth metal

Transition metal

Polyatomic nonmetal

Unknown chemical properties

Lanthanide

Post-transition metal

Diatomic nonmetal

FOUR NEW ELEMENTS (temporary names)

Uut Ununtrium

Discovered by Japanese team

FI Flerovium

Uup Ununpentium

Discovered by joint Russian and American teams

Uus Ununseptium

Uuo Ununoctium

Discoverers invited to suggest permanent names and symbols for elements

New elements do not appear in nature, but are unstable reactive elements made in laboratory

Elements can be named after mythological concepts, minerals, places or countries, property or scientists

After International Union of Pure and Applied Chemistry accepts new names and two-letter symbol suggestions, they are presented for public review for five months, before organisation makes final decision

Element key

Atomic number

Symbol Uut

Element name Ununtrium

Sources: iupac.org, wire agencies

*Predicted to be post-transition metal