Question

When AG is exposed to air it gets a black coating of
a. Ag2 NO3
b. Ag2 S
c. Ag2 O
d. Ag2 Co3

Answer . b. option
Ag2 S​

Answer 1

Answer:

when AG is exposed to air it gets a black coating of AG2S option b is correct

Answer 2

Answer:

Silver (Ag) when exposed to air, reacts with it to form a compound called silver sulphide.

Explanation:

• Silver is a lustrous metal , its atomic number is 47 and is a d block element in the periodic table. Silver when exposed to the air, comes in the contact of sulphur present in the atmosphere.

• It reacts with the sulfur to form silver sulphide which is indicated by the formation of a black coloured coating on the surface of the silver.

• The melting point of silver is 960.8 °C and the boiling point is 2,212 °C.