InterviewSolution
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InterviewSolution
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No compounds of representative elements are found with ions having charges greater than the group number becauseA. these elements do not exhibit variable valencyB. once atoms of these elements have lost their valence electrons, they have stable noble gas or pseudo noble gas configurationsC. they are `s-` and p-block elementsD. they have good shielding electrons |
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Answer» Correct Answer - B The `Delta_iH_2` of Na is nearly ten times greater as the electron in this case must be taken from `Na^(+)`, which has a neon configuration. Mg and Al atoms show similar behaviors as the energy needed to take an electron from either of the ions that result (`Mg^(2+)` and `Al^(3+)`) is extremely high. |
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