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प्रश्न
What do you understand by inert pair effect?
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उत्तर
As one moves down the group, the tendency of s-block electrons to participate in chemical bonding decreases. This effect is known as inert pair effect. In case of group 13 elements, the electronic configuration is ns2 np1 and their group valency is +3. However, on moving down the group, the +1 oxidation state becomes more stable. This happens because of the poor shielding of the ns2 electrons by the d- and f- electrons. As a result of the poor shielding, the ns2 electrons are held tightly by the nucleus and so, they cannot participate in chemical bonding.
संबंधित प्रश्न
How can you explain higher stability of BCl3 as compared to TlCl3?
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(i) The two birdged hydrogen atoms and the two boron atoms lie in one plane;
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(iii) Out of six B – H bonds four B – H bonds can be described in terms of 3 centre 2 electron bonds;
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Pb4+ acts as an oxidising agent but Sn2+ acts as a reducing agent.
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\[\ce{A + 2HCl + 5H2O -> 2NaCl + X}\]
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\[\ce{X ->[Δ][370 K] HBO2 ->[Δ][> 370 K] Z}\]
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\[\ce{Z + 3 LiAlH4 -> X + 3LiF + 3AlF_3}\]
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| Column I | Column II |
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| (iii) SnO | (c) Lewis acid |
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| (e) Tetrahedral shape |
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AlCl3 , AlCl
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InCl3, InCl
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Which one of the following is the correct statement?
