БългарскиBG
Languages
EnglishENFrançaisFRDeutschDEEspañolESItalianoITPortuguêsPTNederlandsNLPolskiPLSvenskaSVČeštinaCSDanskDANorskNOSuomiFITürkçeTRРусскийRUУкраїнськаUK中文ZH日本語JAБългарскиBGCatalàCAΕλληνικάELEestiETHrvatskiHRMagyarHULëtzebuergeschLBLietuviųLTLatviešuLVRomânăROSlovenčinaSKSlovenščinaSLСрпскиSR한국어KOTiếng ViệtVIBahasa IndonesiaIDBahasa MelayuMSالعربيةARहिन्दीHIไทยTHעבריתHEÍslenskaIS

Compare elements

20 comparisons designed to make periodic patterns visible rather than memorized.

Z=1 ↔ Z=2Z=3 ↔ Z=11Z=11 ↔ Z=19Z=4 ↔ Z=12Z=12 ↔ Z=20Z=6 ↔ Z=14Z=7 ↔ Z=15Z=8 ↔ Z=16Z=9 ↔ Z=17Z=17 ↔ Z=35Z=35 ↔ Z=53Z=2 ↔ Z=10Z=10 ↔ Z=18Z=14 ↔ Z=32Z=26 ↔ Z=27Z=26 ↔ Z=28Z=29 ↔ Z=47Z=47 ↔ Z=79Z=30 ↔ Z=48Z=90 ↔ Z=92