Do you know the pireodic table off by heart ?

Question: Do you know the pireodic table off by heart ?
- Keywords:
  periodic table
Asked by abbyedwards to Rochelle, Michaela, Camilla, Beth, Adrian on 4 Feb 2016.
- Michaela Musilova answered on 4 Feb 2016:
  
  No. I know most of the useful elements by heart, but scientists aren’t required to know the whole table by heart. 🙂

Question: Do you know the pireodic table off by heart ?