Library›Atomic Numbers and Elements›One card

A LITTLE SOMETHING WORTH KNOWING

A small discovery. Yours to pass on.

ScienceOne small ahaElement

This chemical element has atomic number 69.

Think it. Then flip it. ahamoraTap to reveal Back to the cue
ScienceOne small aha
Your new ahaThulium

Thulium has 69 protons in every atomic nucleus. Changing that number would make a different element. Source: Thulium ↗

ahamoraReference ↗

Keep the thread going

One answer is a beginning.

Share a little curiosity, or follow it into the full collection.

Flip the full deck →

More from Atomic Numbers and Elements

A few more worth knowing.

  1. 70This chemical element has atomic number 70.RECALL
    Ytterbium

    Symbol Yb

    Open this card ↗
  2. 71This chemical element has atomic number 71.RECALL
    Lutetium

    Symbol Lu

    Open this card ↗
  3. 72This chemical element has atomic number 72.RECALL
    Hafnium

    Symbol Hf

    Open this card ↗