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Which among the following elements have the lowest value of `IE_(1)`?A. `Pb`B. `Sn`C. `Si`D. `C` |
Answer» Correct Answer - B The ionisation energy of tin `{Sn}` is less than that of lead (pb). It is due to the poor shielding of `d-` and `f-` electron in `Pb` due to which it feels greater attraction from nucleus. |
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