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Because ClO3- has a lone pair on the central Cl atom, which pushes harder away than a bond would.

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Q: Why is the bond angle smaller for ClO3- than ClO4-?
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Related questions

Which species has the smaller bond angle ClO4 or ClO3?

ClO3 has the smaller bond angle than ClO4


What is the valency for perchlorate?

The perchlorate ion has one available bond.


What is the type of bond in CLO3?

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Oxygen does not form a covalent bond with chloride, but oxygen does form covalent bonds with chlorine in the polyatomic ions perchlorate (ClO4-1), chlorate (ClO3-1), chlorite (ClO2-1), and hypochlorite (ClO-1).


What happens to the bond angle as the number of bonds increases?

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Why bond angle of H2S is less than H2O?

The bond angle in H2S (92 degrees) is less than in H2O (104.5 degrees) due to the larger size of sulfur compared to oxygen. The larger size of sulfur results in weaker repulsions between the electron pairs, causing the bond angle to be smaller in H2S compared to H2O.


Which bond angle in ch2f2 is greater?

In CH2F2, the bond angle between the carbon-hydrogen bonds will be greater than the bond angle between the carbon-fluorine bonds. This is because hydrogen atoms have a smaller size compared to fluorine atoms, causing repulsion between the larger fluorine atoms to decrease the carbon-hydrogen bond angle.


Why it is likely bond angle for selenium hydride?

The bond angle for selenium hydride is likely to be around 90 degrees. This is because selenium has a lone pair that repels the bonding pairs, making the H-Se-H bond angle less than the ideal 109.5 degrees for a tetrahedral arrangement. Consequently, the bond angle is smaller due to the lone pair's influence.


Which compound has a larger bond angle - oxygen difluoride or carbon dioxide?

Oxygen difluoride (OF2) has a larger bond angle than carbon dioxide (CO2). OF2 has a bond angle of 103.3 degrees while CO2 has a bond angle of 180 degrees. This is because OF2 has two lone pairs of electrons on the central oxygen atom, causing the fluorine atoms to be pushed closer together, resulting in a smaller bond angle.


How you get bond angle of a tetrahedral shape molecule which have 1 lone pair?

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If a bond angle is small how does it affect the stability of the molecule?

A small bond angle leads to increased repulsion between electron pairs, causing higher energy due to increased strain in the molecule's geometry. This can make the molecule less stable compared to a similar molecule with a larger bond angle, which experiences less repulsion and strain.