Iron commonly forms octahedral complexes with a coordination number of 6 due to its ability to accommodate six ligands.

Sodium is highly reactive and readily undergoes oxidation due to its low ionization energy.

Sodium is highly reactive and readily loses an electron, making it likely to undergo oxidation.

Gold is less reactive and more likely to be reduced compared to the other metals listed.

Gold is often extracted using hydrometallurgical methods such as cyanidation.

Leaching is a process used to concentrate ores by dissolving the desired metal into a solution.

The reaction H2 + O2 → H2O involves the oxidation of hydrogen and reduction of oxygen, making it a redox reaction.

Sodium chloride is widely used as a de-icing agent due to its effectiveness in lowering the freezing point of water.

Sodium chloride, or table salt, is widely used as a preservative in various food products.

NH4Cl is formed from the strong acid HCl and the weak base NH3.

Coordination compounds consist of a central metal atom bonded to one or more ligands, which can be neutral or charged.

Hydrogen bonding occurs when hydrogen is covalently bonded to an electronegative atom, such as oxygen or nitrogen.

Hydrogen can form cations (H+) in reactions, especially in acid-base chemistry.

Transition metals can form colored compounds due to d-d electronic transitions.

Tungsten has the highest melting point among transition metals, at 3422 °C.

Iron is used as a catalyst in the Haber process to synthesize ammonia from nitrogen and hydrogen.

Iron (Fe) commonly forms octahedral complexes with a coordination number of 6.

Nickel is known for its ability to form stable complexes with various ligands.

Iron is a transition metal that is commonly associated with the formation of colored compounds due to its variable oxidation states.

Iron (Fe) is widely used as a catalyst in various industrial processes, including the Haber process.

Platinum is widely used in metallurgy for its excellent catalytic properties.

As you move from left to right across a period, electronegativity generally increases due to the increasing nuclear charge.

Copper is known for its ability to form complex ions and plays a crucial role in biological systems, such as in hemocyanin.

Ionic bonds are formed through the electrostatic attraction between positively and negatively charged ions.