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Actinium (Ac) — element 89
reference
Atomic number 89. Symbol Ac. Standard atomic weight 227.0. The actinium atom carries 89 protons in its nucleus; its place in the periodic table is fixed by that count. Verified reference data.
source
Verified reference — chemistry
card id
card_ref_el_089
adjoining cards
- on the shelf of → The periodic table — the map of the elements — an element of the periodic table
- precedes → Radium (Ra) — element 88 — the next element by atomic number (Z 88 → 89)
- on the shelf of → The created order — the science of the floor — an element of the created order (Genesis 1) — matter God spoke into being
- precedes → Thorium (Th) — element 90 — the next element by atomic number (Z 89 → 90)
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