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