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QJEEM19Ch3fb5: JEE Main 2019 Chemistry - Class 11 JEEM19Ch3fb5 Solution: In general, the properties that decrease and increase down a…
In general, the properties that decrease and increase down a group in the periodic table, respectively, are :
Multiple Choice Options
- A Atomic Radius and Electronegativity
- B Electron Gain Enthalpy and Electronegativity.
- C Electronegativity and Atomic Radius.
- D Electronegativity and Electron Gain Enthalpy.
Step-by-Step Verified Solution
Electronegativity decreases down the group because the increased number of energy levels puts the outer electrons very far away from the pull of nucleus.
Atomic radius increases down the group because the number of energy levels increases when you move down the group. Each subsequent energy level is further from the molecules than the last. That is why atomic radius increases down the group.
Atomic radius increases down the group because the number of energy levels increases when you move down the group. Each subsequent energy level is further from the molecules than the last. That is why atomic radius increases down the group.