Identify structure of 2,3-dibromo-1-phenylpentane.

Choose the correct statements from the following

A. All group 16 elements form oxides of general formula $$\mathrm{EO}_2$$ and $$\mathrm{EO}_3$$, where $$\mathrm{E}=\mathrm{S}, \mathrm{Se}, \mathrm{Te}$$ and $$\mathrm{Po}$$. Both the types of oxides are acidic in nature.

B. $$\mathrm{TeO}_2$$ is an oxidising agent while $$\mathrm{SO}_2$$ is reducing in nature.

C. The reducing property decreases from $$\mathrm{H}_2 \mathrm{~S}$$ to $$\mathrm{H}_2$$ Te down the group.

D. The ozone molecule contains five lone pairs of electrons.

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The correct order of reactivity in electrophilic substitution reaction of the following compounds is :

Choose the correct statements from the following

A. $$\mathrm{Mn}_2 \mathrm{O}_7$$ is an oil at room temperature

B. $$\mathrm{V}_2 \mathrm{O}_4$$ reacts with acid to give $$\mathrm{VO}_2{ }^{2+}$$

C. $$\mathrm{CrO}$$ is a basic oxide

D. $$\mathrm{V}_2 \mathrm{O}_5$$ does not react with acid

Choose the correct answer from the options given below :