Which of the following statements regarding halogens is correct?
- AThe bond dissociation enthalpy of $F_2$ is lower than that of $Cl_2$.
- BIodine has the weakest van der Waals forces of attraction.
- CIn hydrohalic acids,$HF$ is the strongest acid.
- DAll halogens exhibit variable oxidation states.
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As the atomic number of halogens increases,the halogen.......
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View SolutionThe standard reduction potential values of some of the $p-$block ions are given below. Predict the one with the strongest oxidising capacity.
With reference to aqua regia,choose the correct option$(s)$.
$(1)$ Reaction of gold with aqua regia produces $NO_2$ in the absence of air.
$(2)$ Aqua regia is prepared by mixing conc. $HCl$ and conc. $HNO_3$ in $3:1$ $(v/v)$ ratio.
$(3)$ Reaction of gold with aqua regia produces an anion having $Au$ in $+3$ oxidation state.
$(4)$ The yellow colour of aqua regia is due to the presence of $NOCl$ and $Cl_2$.
$(1)$ Reaction of gold with aqua regia produces $NO_2$ in the absence of air.
$(2)$ Aqua regia is prepared by mixing conc. $HCl$ and conc. $HNO_3$ in $3:1$ $(v/v)$ ratio.
$(3)$ Reaction of gold with aqua regia produces an anion having $Au$ in $+3$ oxidation state.
$(4)$ The yellow colour of aqua regia is due to the presence of $NOCl$ and $Cl_2$.
Which one is the anhydride of $HClO_4$?
MediumAIIMS 1983
View SolutionWhich one of the following pairs of reactants does not form oxygen when they react with each other?
DifficultAP EAMCET 2005
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