Students can go through AP Inter 1st Year Chemistry Notes 10th Lesson The p-Block Elements – Group 13 will help students in revising the entire concepts quickly.
AP Inter 1st Year Chemistry Notes 10th Lesson The p-Block Elements – Group 13
→ p-Block elements are group – 13, 14, 15, 16, 17, 18 elements with general electronic configuration ns2np1-6 (except He).
→ Boron (B), Aluminium (AZ), Gallium (Ga), Indium (In) and Thallium (Tl) are group III elements.
→ Boron has anamalory properties because it has only two penultimate electrons.
→ Boron is the only non metal present in group – 13 elements so it forms covalent compounds only.
→ Borax formula is Na2B4O7, 10H2O. It is used in the detection of basic radicals in qualitative analysis.
→ Ortho boric acid (H3BO3) has polymeric structure in which planar BO units are joined by hydrogen bonds.
→ Diborane (B2H6) heated with ammonia and finally forms B3N3H6 which is called as Borazole (or) Borazine (or) In-organic benzene.
→ Aluminium oxide has amphoteric nature it has both acidic as well as basic nature.
→ Aluminium reacts with dil.HNO3 but not with cone. HNO3 because of passivity.
→ Aluminium chloride gets stability by forming a dimer.