🧪 NEB & CEE Chemistry: 50 Most Important MCQs from Inorganic Chemistry
Periodic Table | Chemical Bonding | s-block | p-block
📚 Quick Revision: Inorganic Chemistry for NEB & CEE
🔹 Periodic Table & Periodicity: Modern periodic law (Moseley). Atomic radius decreases across period, increases down group. Ionization energy increases across period, decreases down group (exception: N > O, Be > B). Electronegativity highest for F (4.0).
🔹 Chemical Bonding: Ionic bond (NaCl), Covalent bond (H₂), Coordinate bond (NH₄⁺). VSEPR theory: linear (180°), bent (104.5°), trigonal planar (120°), tetrahedral (109.5°). Hybridization: sp, sp², sp³, sp³d, sp³d².
🔹 s-block Elements: Alkali metals (Group 1): Li, Na, K, Rb, Cs, Fr. Flame colors: Li (crimson), Na (yellow), K (lilac). Alkaline earth metals (Group 2): Be, Mg, Ca, Sr, Ba, Ra. CaCO₃ (limestone), CaO (quicklime), Ca(OH)₂ (slaked lime).
🔹 p-block Elements: Group 13-18. Boron family (B, Al), Carbon family (C, Si), Nitrogen family (N, P), Oxygen family (O, S), Halogens (F, Cl, Br, I), Noble gases (He, Ne, Ar, Kr, Xe, Rn). Important compounds: NH₃ (Haber), HNO₃ (Ostwald), H₂SO₄ (Contact), Bleaching powder (CaOCl₂).
💡 Exam Tips: Focus on periodic trends, hybridization, shapes of molecules, s-block compounds, and p-block reactions. Practice NEET/JEE/CEE previous year questions.