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Calcium (Ca) — element 20
reference
Atomic number 20. Symbol Ca. Standard atomic weight 40.078. The calcium atom carries 20 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_020
adjoining cards
- on the shelf of → The periodic table — the map of the elements — an element of the periodic table
- precedes → Potassium (K) — element 19 — the next element by atomic number (Z 19 → 20)
- 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 → Scandium (Sc) — element 21 — the next element by atomic number (Z 20 → 21)
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