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Chemical Bonding and Molecular Structure — Basic Introduction  Class 11 CBSE Chemistry: Chemical Bonding and Molecular Structure – Complete Question Bank 1. Matter is made up of one or different types of elements. Easy meaning: All matter around us is made up of elements . An element contains only one type of atom . Examples: Hydrogen (H), Oxygen (O), Sodium (Na), Chlorine (Cl). NEET point: 👉 Matter → Elements → Atoms 2. Under normal conditions, no other element exists as an independent atom in nature, except noble gases. Easy meaning: Most elements do not remain as single, separate atoms in nature. They usually combine with other atoms to become more stable. Noble gases are an important exception. Examples of noble gases: He, Ne, Ar, Kr, Xe, Rn Why are noble gases stable? Their outermost shell is completely filled. Therefore, they generally do not need to form chemical bonds. NEET point: 👉 Noble gases generally exist as monoatomic gases . 3. A group of atoms is found to exist ...

 - Dr.Sanjaykumar pawar   Electronic Configuration of Atoms – Complete CBSE Class 11 Chemistry Notes with MCQs, Assertion, Case Studies and Important Questions. Electronic Configuration of Atoms Class 11 Chemistry Notes PDF  CBSE Class 11 Chemistry – Electronic Configuration of Atoms Question Bank with Answers (Based on NCERT) A. Multiple Choice Questions (MCQs) 1. The distribution of electrons into orbitals of an atom is called: a) Ionisation b) Electronic configuration c) Hybridisation d) Excitation Answer: b) Electronic configuration 2. According to Pauli Exclusion Principle, an orbital can contain a maximum of: a) 1 electron b) 2 electrons c) 4 electrons d) 6 electrons Answer: b) 2 electrons 3. The electronic configuration of hydrogen is: a) 1s² b) 2s¹ c) 1s¹ d) 2p¹ Answer: c) 1s¹ 4. The electronic configuration of helium is: a) 1s¹ b) 1s² c) 2s² d) 2p² Answer: b) 1s² 5. Which orbital is filled after 3p? a) 3d b) 4s c) 4p d) 5s Answer: b) 4s 6. Which element...