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a. Among `Cu^(o+)`,`Cu^(2+)` and `Cu` which is the largest in size and why? b. Which element in periodic table has the highest `IE` (ionisation energy)? c. Which element, `Mg` or `Al`, is more metallic and why? |
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Answer» a. `Cu` is largest due to less effective nuclear charge. It has `29` electrons , `29` protons, `Cu^(+)` has `28` electrons and `29`protons, `Cu^(2+)` has `27` electrons and `29` protons . b. He has the highest ionisation energy. c. `Mg` is more metallic due to lower ionisation energy. |
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