▁Nin ov ): ▁▁ ▁+ ▁ ▁→ ▁ ▁+ ▁ ▁App lications ▁Due ▁to ▁the ▁physical ▁similar ities ▁which ▁they ▁share , ▁the ▁group ▁ 1 2 ▁elements ▁can ▁be ▁found ▁in ▁many ▁common ▁situations . ▁Z inc ▁and ▁cad m ium ▁are ▁commonly ▁used ▁as ▁anti - cor ros ion ▁( gal van ization ) ▁agents ▁as ▁they ▁will ▁attract ▁all ▁local ▁ox id ation ▁until ▁they ▁completely ▁cor ro de . ▁These ▁protect ive ▁coat ings ▁can ▁be ▁applied ▁to ▁other ▁met als ▁through ▁by ▁hot - d ip ▁gal van izing ▁a ▁subst ance ▁into ▁the ▁mol ten ▁form ▁of ▁the ▁metal , ▁or ▁through ▁the ▁process ▁of ▁electro pl ating ▁which ▁may ▁be ▁pass iv ated ▁by ▁the ▁use ▁of ▁chrom ate ▁sal ts . ▁Group ▁ 1 2 ▁elements ▁are ▁also ▁used ▁in ▁electro chem istry ▁as ▁they ▁may ▁act ▁as ▁an ▁alternative ▁to ▁the ▁standard ▁hydro gen ▁electro de ▁in ▁addition ▁to ▁being ▁a ▁secondary ▁reference ▁electro de . ▁ ▁In ▁the ▁US , ▁z inc ▁is ▁used ▁pre domin antly ▁for ▁gal van izing ▁( 5 5 %) ▁and ▁for ▁br ass , ▁bronze ▁and ▁other ▁allo ys ▁( 3 7 %). ▁ ▁The ▁relative ▁react ivity ▁of ▁z inc ▁and ▁its ▁ability ▁to ▁attract ▁ox id ation ▁to ▁itself ▁makes ▁it ▁an ▁efficient ▁sacrific ial ▁an ode ▁in ▁c ath od ic ▁protection ▁( CP ). ▁For ▁example , ▁c ath od ic ▁protection ▁of ▁a ▁buried ▁pipeline ▁can ▁be ▁achieved ▁by ▁connecting ▁an odes