Soren Periodic Table
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Period 6

Period 6

Contains the lanthanides and 5d block.

What changes

Across a period, properties change predictably.

Moving left to right increases nuclear charge while electrons enter the same principal shell — the key to several periodic trends.

Atomic radius ↓Ionisation energy ↑Electronegativity ↑
32

Elements in this period

55CsCaesiumAlkali metal56BaBariumAlkaline earth metal57LaLanthanumLanthanide58CeCeriumLanthanide59PrPraseodymiumLanthanide60NdNeodymiumLanthanide61PmPromethiumLanthanide62SmSamariumLanthanide63EuEuropiumLanthanide64GdGadoliniumLanthanide65TbTerbiumLanthanide66DyDysprosiumLanthanide67HoHolmiumLanthanide68ErErbiumLanthanide69TmThuliumLanthanide70YbYtterbiumLanthanide71LuLutetiumLanthanide72HfHafniumTransition metal73TaTantalumTransition metal74WTungstenTransition metal75ReRheniumTransition metal76OsOsmiumTransition metal77IrIridiumTransition metal78PtPlatinumTransition metal79AuGoldTransition metal80HgMercuryTransition metal81TlThalliumPost-transition metal82PbLeadPost-transition metal83BiBismuthPost-transition metal84PoPoloniumPost-transition metal85AtAstatineHalogen86RnRadonNoble gas
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