Write the structures of all possible dihalogen derivatives of propane.

The $IUPAC$ name of ethylidene chloride is $.....$ .

Name the following halides according to the $IUPAC$ system and classify them as alkyl,allyl,benzyl (primary,secondary,tertiary),vinyl,or aryl halides:
$(i)$ $[CH_3]_2CHCH(Cl)CH_3$
$(ii)$ $CH_3CH_2CH(CH_3)CH(C_2H_5)Cl$
$(iii)$ $CH_3CH_2C[CH_3]_2CH_2I$
$(iv)$ $[CH_3]_3CCH_2CH(Br)C_6H_5$
$(v)$ $CH_3CH(CH_3)CH(Br)CH_3$
$(vi)$ $CH_3C(C_2H_5)_2CH_2Br$
$(vii)$ $CH_3C(Cl)(C_2H_5)CH_2CH_3$
$(viii)$ $CH_3CH=C(Cl)CH_2CH(CH_3)_2$
$(ix)$ $CH_3CH=CHC(Br)(CH_3)_2$
$(x)$ $p-ClC_6H_4CH_2CH(CH_3)_2$
$(xi)$ $m-ClCH_2C_6H_4CH_2C(CH_3)_3$
$(xii)$ $o-BrC_6H_4CH(CH_3)CH_2CH_3$

Draw the structures of all the eight structural isomers that have the molecular formula $C_{5}H_{11}Br$. Name each isomer according to the $IUPAC$ system and classify them as primary,secondary,or tertiary bromides.

Which of the following halides is $2^o$?

The structural formula for Lewisite is: