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