Which metal does not react with oxygen?

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Both Cu and Au.

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Solution

The correct option is B
Au

Cu can form oxides like $C u O$ , $C u O_{2}$ and $F e$ also can form oxides like ${F e}_{2} O_{3}$ but Au doesn’t form oxides and infact it is inert to oxygen.

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A noble metal is one which is inert and does not react with acids like $H C l, H N O_{3}, H_{2} S O_{4}$ . Select an option with a set of two noble metals.

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Which metal does not react with oxygen?

The correct option is B Au Cu can form oxides like CuO,CuO2 and Fe also can form oxides like Fe2O3 but Au doesn’t form oxides and infact it is inert to oxygen.

The correct option is B
Au

Cu can form oxides like $C u O$ , $C u O_{2}$ and $F e$ also can form oxides like ${F e}_{2} O_{3}$ but Au doesn’t form oxides and infact it is inert to oxygen.