▁line ▁between ▁Mel ton ▁Const able ▁and ▁Great ▁Y arm outh . ▁It ▁closed ▁in ▁ 1 9 5 9 . ▁In ▁ 2 0 1 2 ▁still ▁in ▁situ ▁is ▁the ▁platform ▁wall , ▁some ▁of ▁the ▁stations ▁buildings ▁and ▁an ▁old ▁signal ▁being ▁used ▁by ▁Richard son ' s ▁dry ▁dock . ▁You ▁can ▁trace ▁the ▁old ▁line ▁a ▁good ▁few ▁miles ▁to ▁St al ham . ▁ ▁Form er ▁Services ▁ ▁Category : Dis used ▁railway ▁stations ▁in ▁Nor folk ▁Category : Form er ▁Mid land ▁and ▁Great ▁Northern ▁J oint ▁Railway ▁stations ▁Category : R ail way ▁stations ▁opened ▁in ▁ 1 8 8 0 ▁Category : R ail way ▁stations ▁closed ▁in ▁ 1 9 5 9 <0x0A> </s> ▁I od ine ▁mon och lor ide ▁is ▁an ▁inter hal ogen ▁comp ound ▁with ▁the ▁formula ▁. ▁It ▁is ▁a ▁red - b rown ▁chemical ▁comp ound ▁that ▁mel ts ▁near ▁room ▁temperature . ▁ ▁Because ▁of ▁the ▁difference ▁in ▁the ▁electron eg ativity ▁of ▁i od ine ▁and ▁ch lor ine , ▁ ▁is ▁highly ▁polar ▁and ▁behav es ▁as ▁a ▁source ▁of ▁. ▁▁ ▁I od ine ▁mon och lor ide ▁is ▁produced ▁simply ▁by ▁combining ▁the ▁hal og ens ▁in ▁a ▁ 1 : 1 ▁mol ar ▁ratio , ▁according ▁to ▁the ▁equation ▁ ▁When ▁ch lor ine ▁gas ▁is ▁passed ▁through ▁i od ine ▁cry st als , ▁one ▁obser ves ▁the ▁brown ▁v apor ▁of ▁i od ine ▁mon och lor ide .