The p -Block Elements

From BF₃ to BI₃ Lewis acidic strength increases

F₂ is the strongest oxidising agent

HClO₄ is the most acidic compound.

Proteins on hydrolysis gives α-amino acid because α-amino acids are building block of proteins. It is also fact that amino acids contain both –NH₂ and –COOH group.

Cu : 4s¹3d¹⁰ Cu⁺ : 4s⁰3d¹⁰

Zn : 4s²3d¹⁰ Zn²⁺ : 4s⁰3d¹⁰

Amphoteric oxides are those which can react with both acid and base

SnO₂, PbO₂ and Al₂O₃ are amphoteric oxide

SiO₂, P₂O₅, CO₂ are acidic oxides

CO, NO and N₂O are neutral oxides

Due to inert pair effect Tl shows +1 oxidation state.

Boiling point: $\stackrel{\left(239.7\right)}{N{H}_3}>\stackrel{\left(185.5\right)}{P{H}_3}$  due to hydrogen bonding in NH₃.

: x + 2 (+1) + 3 (–2) + 2 (–1) = 0 x = + 6.