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The 48 pages that link to Transition metal, each with the reason it gives.

• Valence electronBroader topic: Transition metals show why valence-electron assignments can extend beyond the outermost shell.

• Alkali metalCompared with: Transition metals often have variable oxidation states, unlike the usual +1 state of alkali metals.

• Crystal field theoryRelated: Partially filled d orbitals make the model’s splitting and electron occupancy relevant.

• LanthanideCompared with: Transition metals commonly form directionally selective d-bonding, unlike the shielded 4f orbitals of lanthanides.

• Periodic trendsBroader topic: Partly filled d subshells create irregularities that make their trends less uniform than those of main-group elements.

• NickelNarrower topic: Nickel’s d electrons underpin its variable chemistry and many alloying properties.

• ZincNarrower topic: Zinc sits in the d-block, though its filled d subshell makes its classification distinctive.

• GoldNarrower topic: Gold belongs to this broad metallic family, whose members often show variable oxidation states.

• CobaltNarrower topic: Cobalt’s d electrons underlie its colored compounds, variable oxidation states, and complex formation.

• CationRelated: Transition metals can form cations with multiple possible charges, unlike many main-group metals.

• PalladiumNarrower topic: Palladium’s d-electron structure gives it the characteristic chemistry of a transition metal.

• ManganeseNarrower topic: Manganese's d electrons underpin its magnetic, catalytic, and coordination chemistry.

• Alkaline earth metalCompared with: Transition metals often show variable oxidation states, unlike the usual +2 state here.

• Cross-coupling reactionRelated: Palladium, nickel, copper, and other transition metals catalyze many cross-couplings.

• PermanganateRelated: Manganese's d-electron configurations shape the ion's color and redox chemistry.

• MolybdenumNarrower topic: Molybdenum’s d-electron chemistry places it among the transition metals.

• RhodiumNarrower topic: Rhodium’s d-electron chemistry underlies its variable bonding and catalytic activity.

• ScandiumNarrower topic: Scandium belongs to the transition metals as well as the rare-earth elements.

• VanadiumNarrower topic: Vanadium belongs to this broad class of metals and shares its characteristic d-block chemistry.

• d-blockBroader topic: Many d-block elements meet this stricter definition, though the terms are not identical.

• OsmiumNarrower topic: Osmium’s d-electron chemistry gives it metallic bonding and several accessible oxidation states.

• TechnetiumNarrower topic: Technetium's metallic chemistry and coordination compounds fit this broad element family.

• Periodic table blocksBroader topic: Transition metals occupy the d block and often show variable oxidation states.

• 18-electron ruleNarrower topic: The rule is chiefly applied to complexes containing these metals.

• NiobiumNarrower topic: Niobium belongs to the d-block transition metals and shows their characteristic metallic bonding.

• RutherfordiumNarrower topic: Rutherfordium’s predicted electron configuration places it in the d-block.

• Valence shellBroader topic: Their bonding and properties involve valence orbitals that do not fit the simplest octet picture.

• HafniumNarrower topic: Hafnium belongs to this broad class of metallic elements.

• Karl ZieglerRelated: Transition metals later became central components of Ziegler–Natta polymerization catalysts.

• Post-transition metalCompared with: Their neighboring position and d-electron chemistry mark a key contrast.

• RheniumNarrower topic: Rhenium’s d-electron chemistry places it among the transition metals.

• Group 10 elementNarrower topic: Nickel, palladium, and platinum are transition metals within this category.

• Main-group elementCompared with: Transition metals occupy the d-block rather than the main-group columns.

• Boron groupCompared with: Group 13 elements are main-group elements rather than transition metals.

• Cobalt(II) hydroxideNarrower topic: Cobalt’s transition-metal chemistry permits multiple oxidation states and colored compounds.

• Group 11 elementNarrower topic: Group 11 belongs to the d-block metals commonly classified as transition metals.

• Group 9 elementNarrower topic: Cobalt, rhodium, and iridium are transition metals; meitnerium is classified among them by position.

• MeitneriumNarrower topic: Its position places meitnerium among the transition metals, though its chemistry is scarcely measured.

• Period 5 elementBroader topic: Most of period 5 lies in the d-block, but the row also includes other element types.

• RoentgeniumRelated: This classification captures roentgenium’s expected relationship to the d-block metals.

• Yves ChauvinRelated: Transition metals supply the reactive centers in the catalysts behind Chauvin’s mechanism.

• Group 8 elementNarrower topic: All four group members are classified as transition metals.

• Period 2 elementCompared with: Period 2 contains no transition metals because its second shell has no d orbitals.

• Period 4 elementBroader topic: Most of Period 4 consists of transition metals with varied oxidation states.

• BohriumNarrower topic: Bohrium’s predicted chemistry places it among the transition metals.

• Group 12 elementNarrower topic: Zinc, cadmium, and mercury sit in the d-block, though they do not fit every definition of transition metal.

• Group 3 elementNarrower topic: Scandium and yttrium are commonly classified as transition metals.

• Hund's rule of maximum multiplicityBroader topic: Partially filled d subshells make Hund-style occupancy relevant to transition-metal configurations.