{"query": "Cerium (Ce) — element 58", "count": 20, "results": [{"id": "card_ref_el_058", "title": "Cerium (Ce) — element 58", "shelf": "chemistry", "surface": "secular", "snippet": "Atomic number 58. Symbol Ce. Standard atomic weight 140.116. The cerium atom carries 58 protons in its nucleus; its place in the periodic table is fixed by that count. Verified reference data.", "authority_tier": "reference", "source": "Verified reference — chemistry", "readable": false, "generated": false}, {"id": "card_src_word_atomic_number_58", "title": "atomic number 58", "shelf": "dictionary", "surface": "secular", "snippet": "atomic number 58: (noun) a ductile grey metallic element of the lanthanide series; used in lighter flints; the most abundant of the rare-earth group — syn: cerium, Ce", "authority_tier": "reference", "source": "WordNet 3.0, Princeton University (WordNet License)", "readable": false, "generated": false}, {"id": "card_src_word_cerium", "title": "cerium", "shelf": "dictionary", "surface": "secular", "snippet": "cerium: (noun) a ductile grey metallic element of the lanthanide series; used in lighter flints; the most abundant of the rare-earth group — syn: Ce, atomic number 58", "authority_tier": "reference", "source": "WordNet 3.0, Princeton University (WordNet License)", "readable": false, "generated": false}, {"id": "card_src_word_ce", "title": "ce", "shelf": "dictionary", "surface": "secular", "snippet": "ce: (noun) a ductile grey metallic element of the lanthanide series; used in lighter flints; the most abundant of the rare-earth group — syn: cerium, atomic number 58 · (adverb) of the period coincidi", "authority_tier": "reference", "source": "WordNet 3.0, Princeton University (WordNet License)", "readable": false, "generated": false}, {"id": "card_src_etym_cerium", "title": "cerium", "shelf": "etymology", "surface": "secular", "snippet": "cerium: etymology (Webster 1913) — n.: [Named dy Berzelius in 1803 from the asteroid Ceres, then just discovered (1801).]. From Webster's Revised Unabridged Dictionary (1913), public domain.", "authority_tier": "reference", "source": "Webster's Revised Unabridged Dictionary (1913), Project Gutenberg eBook #29765 — public domain", "readable": true, "generated": false}, {"id": "card_src_etym_lanthanum", "title": "lanthanum", "shelf": "etymology", "surface": "secular", "snippet": "lanthanum: etymology (Webster 1913) — n.: [NL., fr. Gr. (Chem.) Defn: A rare element of the group of the earth metals, allied to aluminium. It occurs in certain rare minerals, as cerite, gadolinite, o", "authority_tier": "reference", "source": "Webster's Revised Unabridged Dictionary (1913), Project Gutenberg eBook #29765 — public domain", "readable": true, "generated": false}, {"id": "card_src_etym_didymium", "title": "didymium", "shelf": "etymology", "surface": "secular", "snippet": "didymium: etymology (Webster 1913) — n.: [NL., fr. Gr. (Chem.) Defn: A rare metallic substance usually associated with the metal cerium; -- hence its name. It was formerly supposed to be an element, b", "authority_tier": "reference", "source": "Webster's Revised Unabridged Dictionary (1913), Project Gutenberg eBook #29765 — public domain", "readable": true, "generated": false}, {"id": "card_src_etym_fluocerine_fluocerite", "title": "fluocerine; fluocerite", "shelf": "etymology", "surface": "secular", "snippet": "fluocerine; fluocerite: etymology (Webster 1913) — n.: [Fluo- + cerium.]. From Webster's Revised Unabridged Dictionary (1913), public domain.", "authority_tier": "reference", "source": "Webster's Revised Unabridged Dictionary (1913), Project Gutenberg eBook #29765 — public domain", "readable": true, "generated": false}, {"id": "card_src_etym_monazite", "title": "monazite", "shelf": "etymology", "surface": "secular", "snippet": "monazite: etymology (Webster 1913) — n.: [From Gr. (Min.) Defn: A mineral occurring usually in small isolated crystals, -- phosphate of the cerium metals.]. From Webster's Revised Unabridged Dictionar", "authority_tier": "reference", "source": "Webster's Revised Unabridged Dictionary (1913), Project Gutenberg eBook #29765 — public domain", "readable": true, "generated": false}, {"id": "card_src_etym_eschynite", "title": "eschynite", "shelf": "etymology", "surface": "secular", "snippet": "eschynite: etymology (Webster 1913) — n.: [Gr. (Min.) Defn: A rare mineral, containing chiefly niobium, titanium, thorium, and cerium. It was so called by Berzelius on account of the inability of chem", "authority_tier": "reference", "source": "Webster's Revised Unabridged Dictionary (1913), Project Gutenberg eBook #29765 — public domain", "readable": true, "generated": false}, {"id": "card_src_etym_pyrochlore", "title": "pyrochlore", "shelf": "etymology", "surface": "secular", "snippet": "pyrochlore: etymology (Webster 1913) — n.: [Pyro- + Gr. (Min.) Defn: A niobate of calcium, cerium, and other bases, occurring usually in octahedrons of a yellowish or brownish color and resinous luste", "authority_tier": "reference", "source": "Webster's Revised Unabridged Dictionary (1913), Project Gutenberg eBook #29765 — public domain", "readable": true, "generated": false}, {"id": "card_theory_vsepr_theory", "title": "VSEPR theory (molecular geometry)", "shelf": "theories", "surface": "secular", "snippet": "VSEPR theory (molecular geometry) — an engine domain that can touch it: molecular_geometry. Calibration: seals — shapes and bond angles predict directly. Valence Shell Electron Pair Repulsion: electro", "authority_tier": "reference", "source": "The Theory Assay — calibrated, not judged (docs/THEORY_CATALOG.md)", "readable": false, "generated": false}, {"id": "card_src_etym_dissolution", "title": "dissolution", "shelf": "etymology", "surface": "secular", "snippet": "dissolution: etymology (Webster 1913) — n.: [OE. dissolucioun dissoluteness, F. dissolution, fr. L. dissolutio, fr. dissolvere. See Dissolve.]. From Webster's Revised Unabridged Dictionary (1913), pub", "authority_tier": "reference", "source": "Webster's Revised Unabridged Dictionary (1913), Project Gutenberg eBook #29765 — public domain", "readable": true, "generated": false}, {"id": "card_span_edf3b9c81714", "title": "When the liquid will drop in a continuous thread from the stirrer", "shelf": "sources", "surface": "secular", "snippet": "When  the  liquid  will  drop  in  a  continuous  thread  from \nthe  stirrer,  and  jellifies  on  cooling,  it  is  ready  for  the \n^^  cutting\"  process.  This  consists  in  throwing  in  salt  by", "authority_tier": "primary_pd", "source": "A treatise on chemistry applied to the manufacture of soap and candles; being a thorough exposition, in all their minuti", "readable": true, "generated": false}, {"id": "card_alm_assessment_popper_falsifiability_is_the_method", "title": "Almanac: Falsifiability -- a theory must forbid something; the fork -- demarcation over-applied banishes the metaphysics it cannot test", "shelf": "almanac", "surface": "secular", "snippet": "SITUATION\n  THE KERNEL: Popper got the deep thing right, and it is the engine's own heartbeat. A claim with content forbids something; it sticks its neck out; it can be refuted by a single counterexam", "authority_tier": "reference", "source": "The Almanac — verified-only practical wisdom (sealed)", "readable": false, "generated": false}, {"id": "card_domchk_periodic_table_claimed_atomic_number", "title": "Periodic Table: atomic number", "shelf": "periodic_table", "surface": "secular", "snippet": "A worked check in periodic table: atomic number.\n\nGIVEN\n  symbol = Fe\n\nCLAIMED\n  claimed_atomic_number = 26\n\nTHE ENGINE'S VERDICT\n  periodic_table.element: CONFIRMED — Fe (iron, Z=26) — definitional c", "authority_tier": "reference", "source": "The verifier's own documented relation, and a run this engine performed against it (deterministic; re-runnable with tools/domain_goldens.py)", "readable": false, "generated": false}, {"id": "card_v_958fb7e1a9f3", "title": "the atomic number of iron is 27", "shelf": "periodic_table", "surface": "secular", "snippet": "Verdict: BROKEN.\n• periodic_table.element: atomic number: actual Z=26, claimed 27\nSealed and independently re-checkable: https://narrowhighway.org/s/65b79ffaa798ac353aec0354578cd3708c4fc364b8437fe180f", "authority_tier": "engine", "source": "Verified by the engine — periodic_table", "readable": false, "generated": false}, {"id": "card_theory_periodic_law", "title": "Periodic law (Mendeleev)", "shelf": "theories", "surface": "secular", "snippet": "Periodic law (Mendeleev) — an engine domain that can touch it: periodic_table. Calibration: seals — element properties and group trends look up and compute. Arrange elements by atomic number and their", "authority_tier": "reference", "source": "The Theory Assay — calibrated, not judged (docs/THEORY_CATALOG.md)", "readable": false, "generated": false}, {"id": "card_theory_dalton_s_atomic_theory", "title": "Dalton's atomic theory", "shelf": "theories", "surface": "secular", "snippet": "Dalton's atomic theory — an engine domain that can touch it: chemistry. Calibration: partial — mass ratios verify. Matter is made of indivisible atoms; all atoms of an element share a mass; compounds ", "authority_tier": "reference", "source": "The Theory Assay — calibrated, not judged (docs/THEORY_CATALOG.md)", "readable": false, "generated": false}, {"id": "card_v_cfe8a0172379", "title": "iron has atomic number 26", "shelf": "periodic_table", "surface": "secular", "snippet": "Verdict: HOLDS.\n• periodic_table.element: Fe (iron, Z=26) — definitional claims match\nSealed and independently re-checkable: https://narrowhighway.org/s/9792f17e8050600544197d45e971850ecc493007e97a445", "authority_tier": "engine", "source": "Verified by the engine — periodic_table", "readable": false, "generated": false}], "house": {"door": "FIND", "kind": "cards", "trail": "results", "seal": null, "next_step": {"do": "open the top card", "door": "FIND", "tool": "card_get", "params": {"id": "card_ref_el_058"}}, "ends": "a verdict or a card · the trail · a seal · one next step"}}