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ICSE Chemistry: MCQ Question Bank SECTION I (40 Marks) Attempt all questions from this Section Question 1: a) State the following: 1. The number of elements in period 1, period 2, and period 3 of the Periodic Table. 2. Name the elements in Period 1. 3. What is the common feature of the electronic configuration of the elements at the end of Period 2 and Period 3? 4. What does a Group in the periodic Table mean? 5. Within a group where would you expect to find the element with the greatest metallic character and the largest atomic size? 6. State whether the ionization potential increases or decreases on going down a Group. b) Choose the correct answers from: Parts (i) to (v) refer to changes in the properties of elements on moving left to right across a period of the Periodic Table. For each property, choose the letter corresponding to the correct answer from the choices A, B, C and D. (i) The non-metallic Character of the elements: (x) Decreases (z) Remains the same (y) increases (w) depends on the period. (ii) The electro-negativity: (x) Depends on the number of valence electrons (y) Increases (z) Remains the same (w) Decreases. (iii) The ionization potential: (x) Goes up and down (z) Increases (iv) The atomic size: (x) Decreases (z) Remains the same (y) decreases (w) remains the same. (y) increases (w) sometimes increases or decreases. (v) The electron affinity of the elements in groups 1 to 7: (x) Goes up and then down (y) decreases and then increases (z) Increases (w) decreases. c) Copy and complete the following table: Sodium Formula of chloride Physical state of chloride at room temperature Nature of bonding ICSE-MCQ-QuestionBank Jaydip.Chaudhuri Potassium Phosphorus Carbon Hydrogen 1
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