313947
Which of the following species has tetrahedral geometry?
1 \({\rm{BH}}_{\rm{4}}^{\rm{ - }}\)
2 \({\rm{NH}}_{\rm{2}}^{\rm{ - }}\)
3 \({\rm{CO}}_{\rm{3}}^{{\rm{2 - }}}\)
4 \({{\rm{H}}_{\rm{3}}}{{\rm{O}}^{\rm{ + }}}\)
Explanation:
Conceptual Questions
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE
313948
The geometry of electron pairs around \({\rm{ I }}\) in \(\mathrm{IF}_{5}\) is
1 octahedral
2 trigonal bipyramidal
3 square pyramidal
4 pentagonal planar
Explanation:
\(\mathrm{H}=\dfrac{1}{2}[\mathrm{~V}+\mathrm{Y}-\mathrm{C}+\mathrm{A}]\) \(=\dfrac{1}{2}[5+7]=6\) or alternate way \(\mathrm{IF}_{5}=7+5 \times 7=\dfrac{42}{8}=5+1\) \(\mathrm{sp}^{3} \mathrm{~d}^{2}\) hybridisation, hence it should be octahedral. But its actual geometry is square pyramidal due to the presence of one lone pair of electrons.
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CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE
313947
Which of the following species has tetrahedral geometry?
1 \({\rm{BH}}_{\rm{4}}^{\rm{ - }}\)
2 \({\rm{NH}}_{\rm{2}}^{\rm{ - }}\)
3 \({\rm{CO}}_{\rm{3}}^{{\rm{2 - }}}\)
4 \({{\rm{H}}_{\rm{3}}}{{\rm{O}}^{\rm{ + }}}\)
Explanation:
Conceptual Questions
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE
313948
The geometry of electron pairs around \({\rm{ I }}\) in \(\mathrm{IF}_{5}\) is
1 octahedral
2 trigonal bipyramidal
3 square pyramidal
4 pentagonal planar
Explanation:
\(\mathrm{H}=\dfrac{1}{2}[\mathrm{~V}+\mathrm{Y}-\mathrm{C}+\mathrm{A}]\) \(=\dfrac{1}{2}[5+7]=6\) or alternate way \(\mathrm{IF}_{5}=7+5 \times 7=\dfrac{42}{8}=5+1\) \(\mathrm{sp}^{3} \mathrm{~d}^{2}\) hybridisation, hence it should be octahedral. But its actual geometry is square pyramidal due to the presence of one lone pair of electrons.
313947
Which of the following species has tetrahedral geometry?
1 \({\rm{BH}}_{\rm{4}}^{\rm{ - }}\)
2 \({\rm{NH}}_{\rm{2}}^{\rm{ - }}\)
3 \({\rm{CO}}_{\rm{3}}^{{\rm{2 - }}}\)
4 \({{\rm{H}}_{\rm{3}}}{{\rm{O}}^{\rm{ + }}}\)
Explanation:
Conceptual Questions
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE
313948
The geometry of electron pairs around \({\rm{ I }}\) in \(\mathrm{IF}_{5}\) is
1 octahedral
2 trigonal bipyramidal
3 square pyramidal
4 pentagonal planar
Explanation:
\(\mathrm{H}=\dfrac{1}{2}[\mathrm{~V}+\mathrm{Y}-\mathrm{C}+\mathrm{A}]\) \(=\dfrac{1}{2}[5+7]=6\) or alternate way \(\mathrm{IF}_{5}=7+5 \times 7=\dfrac{42}{8}=5+1\) \(\mathrm{sp}^{3} \mathrm{~d}^{2}\) hybridisation, hence it should be octahedral. But its actual geometry is square pyramidal due to the presence of one lone pair of electrons.
313947
Which of the following species has tetrahedral geometry?
1 \({\rm{BH}}_{\rm{4}}^{\rm{ - }}\)
2 \({\rm{NH}}_{\rm{2}}^{\rm{ - }}\)
3 \({\rm{CO}}_{\rm{3}}^{{\rm{2 - }}}\)
4 \({{\rm{H}}_{\rm{3}}}{{\rm{O}}^{\rm{ + }}}\)
Explanation:
Conceptual Questions
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE
313948
The geometry of electron pairs around \({\rm{ I }}\) in \(\mathrm{IF}_{5}\) is
1 octahedral
2 trigonal bipyramidal
3 square pyramidal
4 pentagonal planar
Explanation:
\(\mathrm{H}=\dfrac{1}{2}[\mathrm{~V}+\mathrm{Y}-\mathrm{C}+\mathrm{A}]\) \(=\dfrac{1}{2}[5+7]=6\) or alternate way \(\mathrm{IF}_{5}=7+5 \times 7=\dfrac{42}{8}=5+1\) \(\mathrm{sp}^{3} \mathrm{~d}^{2}\) hybridisation, hence it should be octahedral. But its actual geometry is square pyramidal due to the presence of one lone pair of electrons.
