Atomic number 114

Flerovium

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114 electrons in 7 shells: 2, 8, 18, 32, 32, 18, 4.

Shells are a teaching model: an electron does not travel on a ring at a fixed distance.

Category: Post-transition metal
Period: 7
Group: 14
Block: p
Atomic mass: 290.192 Da (flerovium-290, estimated)
Electron configuration: [Rn] 5f¹⁴ 6d¹⁰ 7s² 7p² (predicted)
Phase at 25 °C: solid (predicted)

Neighbours in the table

Nh Mc

Properties

Properties of flerovium Standard atomic weights from IUPAC/CIAAW (abridged, 2024); other values from PubChem's periodic table, kelvin converted to °C.
Property	Value	Unit	Source
Atomic number	114
Atomic mass	290.192 Da	Da	PubChem, flerovium-290, estimated
Electron configuration	1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 6s² 4f¹⁴ 5d¹⁰ 6p⁶ 7s² 5f¹⁴ 6d¹⁰ 7p² (predicted)
Phase at 25 °C	solid (predicted)

This element has no standard atomic weight; the atomic mass shown is PubChem's, that of flerovium-290, and no isotope of it is established as the longest-lived.

That mass is an estimate by the IAEA's Atomic Mass Data Center, not a measurement.

The electron configuration and the phase of this element are predictions, not measurements.

Flerovium

Properties

Sources