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1. |
Second and successive electron affinity of an elementA. is always successive (energy is released)B. is always positive (energy is absorbed)C. can be positive or negativeD. is always zero |
Answer» Correct Answer - B `O_((g))+e^(-) underset(-EA_(1))(rarr)O_((g))^(ɵ) + e^(-) underset(+EA_(2))(rarr) O_((g))^(2-)` Energy is required to add an eelctron to the negatively charge species due to electron-electron repulsion. |
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