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Formula Sheets / Chemistry

Chapter 11

s Block Elements

Revise with flashcards Download this chapter (PDF) All Chemistry formulas (PDF)

Alkali metals Alkaline earth metals and compounds

Alkali metals

reducing power in water: Li $>$ Cs $>$ Rb $>$ K $>$ Na(hydration enthalpy of Li $^{+})$
Oxides with excess O₂
Li $_{2}$ O $,$ Na $_{2}$ O $_{2},$ KO $_{2}$ (K, Rb, Cs)
flame colours: Li crimson, Na yellow, K violet

Alkaline earth metals and compounds

Solubility trends
sulphates $↓$ down the group $;$ hydroxides $↑$ down the group
gypsum CaSO $_{4} \cdot 2$ H $_{2}$ O $393 K$ plaster of Paris CaSO $_{4} \cdot \frac{1}{2}$ H $_{2}$ O
Diagonal relationship
Li–Mg $,$ Be–Al $,$ B–Si

Hydrogen p Block Elements (Group 13 and 14)