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Define the following: (i) Ionisation energy (ii) Electron affinity (iii) Atomic radii (iv) Modern periodic law |
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Answer» (i) Ionisation energy:- It is the amount of energy required to remove an electron from an isolated gaseous atom. (ii) Electron affinity:- Electron affinity is the energy which is released when an extra electron is added to an isolated gaseous atom in its outermost shell. (iii) Atomic radii:- The distance from the center of the nucleus to the outermost shell is defined as atomic radii. (iv) Modern periodic law:- Properties of the element are a periodic function of their atomic number. |
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