Short Q&A for Chemical Bonding and Molecular Structure (Class 11 NCERT)
Over 110 Short Q&A for Chemical Bonding and Molecular Structure (Class 11 NCERT) Part 1: Basic Concepts and Valence Bond Theory (VBT) Q. No. Question Answer 1 What is a Chemical Bond? The attractive force that holds various constituents (atoms, ions) together in different chemical species. 2 Why do atoms combine to form molecules? To acquire a stable configuration (usually octet or duplet). 3 State the Octet Rule. Atoms tend to achieve eight electrons in their valence shell. 4 Give one example of a molecule that violates the Octet Rule (incomplete octet). BCl3 or LiCl. 5 Give one example of a molecule that violates the Octet Rule (expanded octet). SF6 or PCl5. 6 Who proposed the concept of electrovalent (ionic) and covalent bonds? Kossel and Lewis. 7 What is an Ionic Bond? The electrostatic force of attraction between two oppositely charged ions formed by complete transfer of electrons. 8 What is a Covalent Bond? A bond formed by the mutual sharing of electrons between two...
