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 55.

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

Caesium has 55 protons in every atomic nucleus. Changing that number would make a different element. Source: Caesium ↗

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. 56This chemical element has atomic number 56.RECALL
    Barium

    Symbol Ba

    Open this card ↗
  2. 57This chemical element has atomic number 57.RECALL
    Lanthanum

    Symbol La

    Open this card ↗
  3. 58This chemical element has atomic number 58.RECALL
    Cerium

    Symbol Ce

    Open this card ↗