What is the geometry of [Fe(CO)4]?
[Fe(CO)4] (Fe₀, d8) with 4 ligands is tetrahedral, using sp3 hybridization.
Ref: NCERT Class 12 Chemistry > Chapter 5: Coordination Compounds > Topic: Nomenclature of Coordination Compounds
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What is the shape of the MnO 4 - ion?
Permanganate ion (MnO 4 - ) has tetrahedral geometry with sp 3 hybridization.
Ref: NCERT Class 12 Chemistry > Chapter 4: d and f Block Elements > Topic: Preparation and Properties of Potassium Dichromate and Permanganate
A compound with 9 σ bonds and 1 π bond has a molecular formula of C₄H₆. Which carbon has a bond angle closest to 109.5°?
CH₃CH=CHCH₂ fits C₄H₆ with 9 σ (6 C-H, 2 C-C, 1 from C=C) and 1 π (C=C). The first carbon (CH₃) is sp³, with a 109.5° bond angle.
Ref: NCERT Class 11 Chemistry > Chapter 8: Organic Chemistry - Some Basic Principles and Techniques > Topic: Isomerism - Structural Isomerism - Chain Position Functional Metamerism
Which carbon atom in CH₃CH₂CH₂C≡CH has a bond angle closest to 180°?
In CH₃CH₂CH₂C≡CH, the carbon in C≡CH is sp hybridized (triple bond), with a linear bond angle of 180°.
Ref: NCERT Class 11 Chemistry > Chapter 8: Organic Chemistry - Some Basic Principles and Techniques > Topic: Isomerism - Stereoisomerism - Geometrical and Optical Isomerism
Which carbon in CH₃CH₂C≡CCH₂CH₃ has the smallest bond angle?
In CH₃CH₂C≡CCH₂CH₃ (pent-2-yne), sp³ carbons (CH₃, CH₂) have 109.5°, while sp carbons (C≡C) have 180°. The first (CH₃) has the smallest.
Ref: NCERT Class 11 Chemistry > Chapter 8: Organic Chemistry - Some Basic Principles and Techniques > Topic: Electronic Effects - Inductive Mesomeric Hyperconjugation and Resonance
What is the shape around the carbon atom in CH₃C≡CH that is triple-bonded?
The triple-bonded carbon in CH₃C≡CH is sp hybridized with two sigma bonds, forming a linear shape.
Ref: NCERT Class 11 Chemistry > Chapter 8: Organic Chemistry - Some Basic Principles and Techniques > Topic: Electronic Effects - Inductive Mesomeric Hyperconjugation and Resonance
Which molecule has an octahedral electron pair geometry but a square planar molecular shape?
In XeF₄ , xenon has 6 electron pairs (4 bonding, 2 lone) with sp³d² hybridization, giving an octahedral electron geometry and a square planar shape.
Ref: NCERT Class 11 Chemistry > Chapter 4: Chemical Bonding and Molecular Structure > Topic: Valence Bond Theory and Hybridisation - sp sp2 sp3 dsp2
Which of the following molecules exhibits sp³d hybridization?
In AsF₅ , arsenic uses one s, three p, and one d orbital to form five sp³d hybrid orbitals, giving a trigonal bipyramidal shape.
Ref: NCERT Class 11 Chemistry > Chapter 4: Chemical Bonding and Molecular Structure > Topic: Valence Bond Theory and Hybridisation - sp sp2 sp3 dsp2
The hybridization of xenon in XeF₆ is:
In XeF₆ , xenon has 8 valence electrons, forms 6 bonds (12 electrons used), leaving 2 electrons as 1 lone pair. With 7 electron pairs (6 bonding, 1 lone), it adopts sp³d² hybridization, forming an octahedral electron geometry with a distorted octahedral molecular shape due to lone pair repulsion.
Ref: NCERT Class 11 Chemistry > Chapter 4: Chemical Bonding and Molecular Structure > Topic: Valence Bond Theory and Hybridisation - sp sp2 sp3 dsp2
The hybridization of bromine in BrF₅ is:
In BrF₅ , bromine has 6 electron pairs (5 bonding, 1 lone), requiring sp³d² hybridization, forming a square pyramidal shape.
Ref: NCERT Class 11 Chemistry > Chapter 4: Chemical Bonding and Molecular Structure > Topic: Valence Bond Theory and Hybridisation - sp sp2 sp3 dsp2
The hybridization of oxygen in H₂O is:
In H₂O , oxygen has four electron pairs (two bonding, two lone), requiring sp³ hybridization.
Ref: NCERT Class 11 Chemistry > Chapter 4: Chemical Bonding and Molecular Structure > Topic: Valence Bond Theory and Hybridisation - sp sp2 sp3 dsp2
Which molecule has a linear shape with a bond angle of 180°?
In BeCl₂ , beryllium undergoes sp hybridization, resulting in a linear shape with a 180° bond angle.
Ref: NCERT Class 11 Chemistry > Chapter 4: Chemical Bonding and Molecular Structure > Topic: Valence Bond Theory and Hybridisation - sp sp2 sp3 dsp2