Which of the following crossing involve both Hybridization and selection?
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11th
Chemistry
Chemical Bonding and Molecular Structure
Valence Shell Electron Pair Repulsion (VSEPR ) Theory
Which of the following conv...
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Asked on October 15, 2019 by
Ashesh Haridas
Which of the following conversions involves change in both shape and hybridisation?
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ANSWER
(A) Both CH
4
and C
2
H
6
have sp
3
hybridisation and tetrahedral shape.
(B) Both NH
3
and NH
4
+
have sp
3
hybridisation. But the shape of NH
3
is pyramidal and shape of NH
4
+
is tetrahedral.
(C) Both H
2
O and H
3
O
+
have sp
3
hybridisation. H
2
O is bent shaped molecule and H
3
O
+
is pyramidal.
(D) BF
3
→BF
4
−
involves change in both shape and hybridisation. BF
3
is trigonal planar with sp
2
hybridisation.
BF
4
−
is tetrahedral with sp
3
hybridisation.
Hence, option D is correct.
Explanation:
The crossing between genetically identical plants to produce a new variety, that is hybrid is called hybridization. Crossing may be between two different varieties (intra varietal cross breeding), between two different species of some genis (interspecific crossbreeding) and between different genera (intergeneric crossbreeding). Genetically, modified crops can be produced by insertion of genes with desired traits by the process of hybridization.
Therefore, the correct answer is option A.