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Suffix – “ic-acids” , ‘us-acids” :

The preffix “us” use for the those oxy acids which have one of the lower common oxidatation state while preffix “ic” use for those oxy acid have one of the higher oxidation state for example the common positive oxidation state of  nitrogen is its oxy acid HNO2 is (+3) and HNO3 is (+5) so  HNO2 named as nitrous acid while HNO3 is named as nitric acid. And  other example of Sulphurous acid H2SO3(+4) and sulphuric acid H2SO4(+6).

 Related Questions:

What are "pyro" oxy acids?
Why SF6 behave inert towards hydrolysis?
What are the SESQUI OXIDES ? give the examples.
Arrange in increasing order of extent of hydrolysis [ CCI4, MgCI2, AICI3, PCl5, SiCI4].
Although Sulphur contain vacant d-orbital but SF6 does not under go hydrolysis. Why ?
CCl4 can not be hydrolysed but SiCl4 can be. Why?
Silianol (SiH3OH) is more acidic than methanol (CH3OH) why?

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