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What is the role of unshared electron pairs in predicting molecular geometries?
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∙ 11y ago
Lone electron pairs give the geometry a triangular base.
Wiki User
∙ 11y ago
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What causes water molecules to have a bent shape according to VSEPR threory?
Repulsion of the unshared electron pairs (2)and the bonded pairs (2) around the central oxygen atom. Repulsion of these 4 electron pairs attempts to form a tetrahedral shape. Describing the molecular shape, we ignore the unshared electrons and just describe the shape of the molecule based on the location of the atoms, thus bent.
What is the difference between lone pair and bonding pair electron?
they are the same. Lone pair is unshared pair of electrons and bond pair is shared pair of electron.
Why does CO2 have a linear shape instead of a bent shape?
The Carbon has double bonds to each of the oxygen atoms, so it does not have any unshared pairs or electrons. Valence shell electron pair repulsion theory dictates that the electron pairs will be repel, so the farthest apart they can be is 180 degrees apart or linear.
How does VSEPR determine molecular geometry?
The VSEPR model has enabled chemists and students to describe, explain, and predict more easily the stereochemistry of chemical elements and compounds. The Lewis structure, which was primarily used to convey the appearance of molecules in the past, proved to be inadequate because there existed many exceptions to this type of diagram. The Lewis structure displayed no information about the geometry of a molecule as it did not indicate how atoms were arranged in space. The VSEPR theory has relieved chemists and students of such limitations by describing the orientation of a molecule in relation to the Pauli principle. By determining this principle affected molecular geometry, Gillespie illustrated that the repulsion interactions of all electron pairs, both shared and unshared ones, in the valence of a molecule determine its shape. This is due to the fact that electron pairs adapt an arrangement that keeps them as far apart as possible; they repel one another. glad to help grade 12 chem student
What is the electronic geometry of H2O?
The bond angle between the two hydrogen is 104.5 degrees. If it weren't for the two unshared pairs of electrons pushing those atoms into a v-shape, the molecule would be linear.
Describe the role of each of the following in predicting molecular geometries a unshared electron pairs by double bonds?
Lone electron pairs give the geometry a triangular base, while double bonds make the molecular geometry bent or angular.
What causes water molecules to have a bent shape according to VSEPR threory?
Repulsion of the unshared electron pairs (2)and the bonded pairs (2) around the central oxygen atom. Repulsion of these 4 electron pairs attempts to form a tetrahedral shape. Describing the molecular shape, we ignore the unshared electrons and just describe the shape of the molecule based on the location of the atoms, thus bent.
What causes hydrogen bonds?
bonding of a covalently bonded hydrogen atom with an unshared electron pair
When the central atom of a molecule has unshared electrons the bond angles will?
When the central atom of a molecule has unshared electron, the bond angles will be less than when all the central atom's electrons are shared.
What is the difference between lone pair and bonding pair electron?
they are the same. Lone pair is unshared pair of electrons and bond pair is shared pair of electron.
Why do amines act as bases?
in amines a unshared pare of electron is present over nitrogen which is responsible for its basic character.
Which is more acidic aniline or ammonia?
aniline is more acidic because in aniline a electron withdrawing benzene is connected.electron withdrawing capacity of benzene is due to its delocalizing pi electrons cloud.due the action of benzene the presence of unshared pair of electron over nitrogen is somehow decreases.which increases its acidic nature. But in case of ammonia there is no electron withdrawing group.so its unshared pair of electron remains undistrubed,which decreases its acidity and increases its basisity
Why is the molecular geometry of water bent?
repulsive forces between unshared pairs of electrons
Does hexane have any unshared electrons?
A hydrogen atom can lose its only electron in an ionic bond. The atom would have no electrons. Actually the correct answer is No.
How many unshared pairs of electrons are in hydrogen iodide?
Oxygen has six (6) valence electrons. In the formation of a water molecule, two (2) of the valence electrons forms a covalent bond with two other hydrogen atoms leaving the water molecule with 2 unshared pairs of electron.
What is the molecular shape for SiH2O?
It is pyramidal.
How many unshared Paris of electrons are in NF3?
there are 10 unshared electrons
