Oganesson Element (Periodic Table)

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Oganesson

Oganesson (Og) is a chemical element of the periodic table, located in the group 18 and the period 7, and has the atomic number 118. It is named after the Russian nuclear physicist, Yuri Oganessian. It is a member of the noble gas group and is the last element of the 7th period. It is a transuranium element and is counted as one of the radioactive elements.

group
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
period
1
 1
H
 2
He
2
 3
Li
 4
Be
 5
B
 6
C
 7
N
 8
O
 9
F
 10
Ne
3
 11
Na
 12
Mg
 13
Al
 14
Si
 15
P
 16
S
 17
Cl
 18
Ar
4
 19
K
 20
Ca
 21
Sc
 22
Ti
 23
V
 24
Cr
 25
Mn
 26
Fe
 27
Co
 28
Ni
 29
Cu
 30
Zn
 31
Ga
 32
Ge
 33
As
 34
Se
 35
Br
 36
Kr
5
 37
Rb
 38
Sr
 39
Y
 40
Zr
 41
Nb
 42
Mo
 43
Tc
 44
Ru
 45
Rh
 46
Pd
 47
Ag
 48
Cd
 49
In
 50
Sn
 51
Sb
 52
Te
 53
I
 54
Xe
6
 55
Cs
 56
Ba
 72
Hf
 73
Ta
 74
W
 75
Re
 76
Os
 77
Ir
 78
Pt
 79
Au
 80
Hg
 81
Tl
 82
Pb
 83
Bi
 84
Po
 85
At
 86
Rn
7
 87
Fr
 88
Ra
 104
Rf
 105
Db
 106
Sg
 107
Bh
 108
Hs
 109
Mt
 110
Ds
 111
Rg
 112
Cn
 113
Nh
 114
Fl
 115
Mc
 116
Lv
 117
Ts
 118
Og
57
La
 58
Ce
 59
Pr
 60
Nd
 61
Pm
 62
Sm
 63
Eu
 64
Gd
 65
Tb
 66
Dy
 67
Ho
 68
Er
 69
Tm
 70
Yb
 71
Lu
89
Ac
 90
Th
 91
Pa
 92
U
 93
Np
 94
Pu
 95
Am
 96
Cm
 97
Bk
 98
Cf
 99
Es
 100
Fm
 101
Md
 102
No
 103
Lr
– p block

FAQs on Oganesson Element

Oganesson
‣ What does oganesson look like?

Appearance: metallic (predicted)
‣ Who discovered oganesson? When was the element oganesson discovered?

Prediction: Hans Peter Jorgen Julius Thomsen (1895)
Discovery: Joint Institute for Nuclear Research and Lawrence Livermore National Laboratory (2002)
‣ Where is oganesson located on the periodic table?

Oganesson Periodic Table

Location: Oganesson is found in the seventh row of the periodic table, next to the tennessine element.
‣ What is the atomic number of oganesson?

Atomic number (Z): 118
‣ What is the symbol of oganesson?

Symbol: Og
‣ What is the atomic weight of oganesson?

Standard atomic weight: [294]
‣ What block is oganesson in on periodic table?

Block: p-block
‣ What is the group number of the element oganesson?

Group: 18 (noble gases)
‣ What period is oganesson in on periodic table?

Period: 7
‣ What is oganesson atomic radius?

Atomic radius: empirical: 152 pm (predicted)
‣ Oganesson covalent radius: 157 pm (predicted)
‣ What is oganesson melting point?

Melting point: 325 ± 10 K (177 ± 10 °C, 350 ± 18 °F) (predicted)
‣ Oganesson critical point: 439 K, 6.8 MPa (extrapolated)
‣ How many electron shells does oganesson have?

Electrons per shell: 2, 8, 18, 32, 32, 18, 8 (predicted)
‣ What is the electron configuration for oganesson?

Electron configuration: [Rn] 5f14 6d10 7s2 7p6 (predicted)
‣ Oganesson ionization energies:
1st: 860.1 kJ/mol (predicted)
2nd: 1560 kJ/mol (predicted)
‣ Is oganesson a solid, liquid or gas?

Phase (at r.t): solid (predicted)
‣ Oganesson density (near r.t): 6.6-7.4 g/cm3 (predicted)
‣ Oganesson natural occurrence: synthetic
‣ Oganesson oxidation state: (-1), (0), (+1), (+2), (+4), (+6) (predicted)
‣ Oganesson heat of fusion: 23.5 kJ/mol (extrapolated)
‣ Oganesson heat of vaporization: 19.4 kJ/mol (extrapolated)
‣ What is the crystal structure of oganesson?

Crystal structure: face-centered cubic (fcc) (extrapolated)
‣ Oganesson CAS number: 54144-19-3

‣ How many isotopes does oganesson have?

Main isotopes of oganesson
IsotopeAbundanceHalf-life (t1/2)Decay modeProduct
294Ogsyn0.69 msα
SF		290Lv

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