PERIODIC TABLE AND PERIODICITY OF PROPERTIES 1. Main group elements are arranged in groups. 8 6 7 10 2. Period number of 27/23 Al is: 4 2 1 3 3. All the elements of Group IIA are less reactive than alkali metals. This is because these elements have: high ionization energies similar electronic configuration relatively greater atomic sizes decreased nuclear charge 4. Number of periods in the periodic table are: 8 5 16 7 5. Which of the following elements you expect to have greater shielding effect? Na Li K Rb 6. Valence shell electronic configuration of an element M (atomic no 14) is: 2s², 2p² 2s², 2p³ 3s2, 3p2 2s2, 2p 7. As you move from right to left across a period, which of the following do not increase: electron affinity shielding effect nuclear charge ionization energy 8. Which of the following elements belongs to VIIIA? Br Mg Na Xe 9. Which of the following groups contain alkaline earth metals? 1A IIA VIIIA VIIA Loading … Question 1 of 9 Related Questions: ATOMIC STRUCTURE Nature of Science in Chemistry MCQ Matter MCQ CHEMICAL BONDING STOICHIOMETERY ELECTOROCHEMISTRY ENERGETICS
