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#lutetium
#last lanthanide
#lanthanide series finale
#periodic table position
#f-block element
#element 71
🧪Lu7️⃣1️⃣
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#lutetium
#lu
#element 71
#atomic number 71
#chemical symbol lu
#lutetium #last lanthanide #lanthanide series finale #periodic table position #f-block element #element 71