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Which of the following oxidation states are the most characteristic for lead and tin respectiviely?
Options
(a) 2,4
(b) 4,4
(c) 2,2
(d) 4,2
Correct Answer:
2,4
Explanation:
When ns² electrons of outermost shell do not participate in bonding then these ns² electrons are called inert pair and the effect is called inert pair effect.Due to this inert pair effect Ge,Sn and Pb of group IV have a tendency to form both +4 and + 2 ions, Now the inert pair effect increases down the group, hence the stability of M²⁺ ions increases and M⁴⁺ ions decreases down the group. For this reason, Pb²⁺ is more stable than Pb⁴⁺ and Sn⁴⁺ is more stable than Sn²⁺.
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Topics: S and Some P Block Elements
(157)
Subject: Chemistry
(2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- This radical can be identified by Borax bead test is
- At 25⁰C, the dissociation constant of a base, BOH, is 1.0 ˣ 10⁻¹².
- If heat of formation of C + O₂ → 2CO is ΔH = -110.5 kcal,then heat of combustion
- At higher temperature,iodoform reaction is given by
- Which of the following statements is true for the electrochemical Daniel cell
Topics: S and Some P Block Elements (157)
Subject: Chemistry (2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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