Silver article become black on prolonged exposure to air this is because

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Solution

Silver articles become black on exposure to air for sometime. When silver articles exposed to air silver racts with sulphur present in the atmosphere and form a black layer of silver sulphide on the surface.
Similarly,
Copper articles get tarnished by reacting with air and water. Due to this, a layer is formed over copper vessels. This layer mainly contains black copper oxide and green copper hydroxide.

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Q. Question 13
Silver articles become black on prolonged exposure to air. This is due to the formation of:
(a)

{Ag}_{3} N

(b)

{Ag}_{2} O

(c)

{Ag}_{2} S

(d)

{Ag}_{2} S

and

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Silver jewellery becomes black on prolonged exposure to air, it is due to the formation of

The articles made of silver metal become dark on prolonged exposure to air. This is due to the formation of a layer of its:
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