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Bond angles in molecules differ primarily due to the arrangement of electron pairs around a central atom and the presence of lone pairs. According to VSEPR (Valence Shell Electron Pair Repulsion) theory, electron pairs, whether bonding or non-bonding, repel each other and adopt positions that minimize this repulsion, leading to specific geometric shapes. Additionally, the types of atoms involved and their hybridization states can influence bond angles, resulting in variations across different molecules.
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What are the limitations of valence bond theory?
Valence bond theory has limitations as it provides a limited view of molecular bonding, especially when applied to complex molecules. It does not easily explain the molecular geometry and properties of molecules accurately as it assumes fixed bond angles and shapes. Additionally, it does not account for molecular orbitals and delocalized bonding in a comprehensive manner.
What causes an atom to form a hydrogen bond?
A hydrogen bond is a weak bond formed between two molecules or atoms. It is caused by an atom of hydrogen being attracted to spare electron pairs on a neighbouring atom.
What is the value of the bond angles in rm IF4?
The bond angles in IF4^- (iodine tetrafluoride) are approximately 90 degrees.
Why Bond angle is important?
Bond angles are important because they determine the overall shape and geometry of a molecule, which in turn affects its chemical properties. The bond angle influences the reactivity, stability, and physical properties of the molecule. Understanding bond angles helps chemists predict how a molecule will behave in different chemical reactions.
True o false different types of atoms can bond together to make molecules?
True. Different types of atoms can bond together to form molecules through chemical bonds, such as covalent or ionic bonds. These molecules can vary in complexity and characteristics depending on the types of atoms involved and their arrangement. This diversity is fundamental to the vast array of substances found in nature.
Why do molecules have different molecular shapes?
Molecules have different shapes due to the arrangement of their atoms in space. This arrangement is influenced by factors such as bond angles, bond lengths, and electron distribution around the atoms. These factors determine the overall geometry and shape of the molecule.
How do double bonds affect bond angles in molecules?
Double bonds in molecules typically result in a rigid planar structure, which can affect bond angles. The presence of a double bond restricts the rotation around the bond, leading to a fixed bond angle of approximately 120 degrees. This can influence the overall shape and geometry of the molecule.
What kind of bond causes water molecules to be be attracted to one another?
ionic
What two different ways does carbon join together to make molecules?
Covalent bond (as in all organic molecules) Inorganic bond (as in carbides)
Why are the bond angles in water and ammonia less than the ideal value of 109.5?
The bond angles in water and ammonia are less than the ideal value of 109.5 degrees because of lone pair-bond pair repulsions. The presence of lone pairs on the central atom causes greater electron-electron repulsions, pushing the bonding pairs closer together and decreasing the bond angle.
Why are plastic building blocks good for modeling molecules?
they can be combined in many different ways
What are the bond angles of trigonal planar?
The bond angles are 120 degrees
What are the bond angles of CO2?
The bond angles of CO2 are 180 degrees.
Does h2 have 109.5 degree bond angles?
No, H2 does not have a bond angle. H2 is a diatomic molecule composed of two hydrogen atoms bonded together, forming a linear molecule with no bond angle. Bond angles are typically associated with molecules that have three or more atoms.
What are the approximate bond angles in ClF5?
90 and 180 are the approximate bond angles.
What are the bond angles in HClO3?
The bond angles in HClO3 are approximately 109.5 degrees.
What are the bond angles in HNO2?
The bond angles in HNO2 are approximately 120 degrees.
