9th Chemistry Chapter3 Periodic Table and Periodicity of Properties
| Sr # | Questions | A | B | C | D |
|---|---|---|---|---|---|
| 1 | All the elements of Group IIA are less reactive than alkali metals. This is because these elements have ; | high ionization energies | relatively greater atomic sizes | similar electronic configuration | decreased nuclear charge | 2 | First tree periods along re called : | short periods | long periods | small periods | periodic table | 3 | Mendeleev periodic Table was based upon the : | electronic configuration | atomic mass | atomic number | completion of a subshell | 4 | Long form of periodic Table is constructed on the basis of | Mendeleev postulate | atomic number | atomic mass | mass number | 5 | Main group elements are arranged in ………… groups. | 6 | 7 | 8 | 10 | 6 | As you move from right to left across a period, which of the following does not increase: | electron affinity | ionization energy | nuclear charge | shielding effect | 7 | 4th and 5th period of the long form o fperiodic Table are called : | shorts periods | normal periods | very long periods | long periods | 8 | Which of the following elements belongs to VIIIA? | Na | Mg | Br | Xe | 9 | Which of the following elements you expect to have greater shielding effect ? | Li | Na | K | Rb | 10 | Valence shell electronic configuration of an element M (atomic no. 14 ) is : | 2s^ssp^1 | 2s^2 2p^2 | 2s^2 2p^3 | 3s^2 3p^2 | 11 | The ionization energy value decreases from top to bottom in a : | period | periodic table | group | electron affinity | 12 | The atomic radii of the elements in periodic Table : | increase from left to right in a period | increase from top to bottom in a group | do not change from left to right in a period | decrease from top to bottom in a group | 13 | Each vertical colum of elememts in the periodic table is called : | transition elements | periods | table | group or family | 14 | Which of the following groups contain alkaline earth metals? | 1A | IIA | VIIA | VIIIA | 15 | Number of periods in the periodic table are: | 8 | 7 | 16 | 5 | 16 | The amount of energy given out when an electron is added to an atom is called : | lattice energy | ionization energy | electronegativity | electron affinity |