If copper is kept open in the air, it slowly loses its shining brown surface and gains a green coating. It is due to the formation of the:

By Team Aakash Byju's | 20th January 2023

The correct answer is B) CuCO .

[{"selector":"#anim-5d3c655e-b222-4341-bfca-4c9626bb03d9","keyframes":{"opacity":[0,1]},"delay":0,"duration":1200,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-9da5314e-e850-4a14-b073-562bc5dfa93c","keyframes":{"transform":["translate3d(-163.74502%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":1200,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-ccc8b01c-c413-44fb-bb6e-e01ff0c4dfdf","keyframes":{"opacity":[0,1]},"delay":0,"duration":1200,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-65e91ddd-a6ae-47b7-8c50-3ea50a7ce172","keyframes":{"transform":["translate3d(-123.71795%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":1200,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] Detailed Explanation Arrow

All metals are usually reactive.

[{"selector":"#anim-a13a5284-6800-4815-b2a7-58b129dbc7c7","keyframes":{"opacity":[0,1]},"delay":0,"duration":1200,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-f10e4f02-cb01-471f-bf03-3bd029343196","keyframes":{"transform":["translate3d(-118.78981%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":1200,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}]

[{"selector":"#anim-62576b57-83b7-4105-a0f8-ffbdfb473bf0 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate3d(0%, 0, 0) translate(25%, 0%) scale(1.5)","translate3d(0%, 0, 0) translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.14,.34,.47,.9)","fill":"forwards"}] Attend a Trial Class

When exposed to air, the pure copper metal begins to interact with gases such as carbon dioxide and water vapour.

[{"selector":"#anim-94851163-b16a-47d0-afe9-a2fbf5d42fbb","keyframes":{"opacity":[0,1]},"delay":0,"duration":1200,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-4c2cb5ab-26a5-422c-8f0c-76ca75b00918","keyframes":{"transform":["translate3d(-118.78981%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":1200,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}]

Copper carbonate and other compounds are formed as a result of this reaction.

[{"selector":"#anim-928d1966-818d-4469-9280-00812b191b0d","keyframes":{"opacity":[0,1]},"delay":0,"duration":1200,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-4d7c1e0e-83bd-4b6e-8e4e-7d1715c14398","keyframes":{"transform":["translate3d(-118.78981%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":1200,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}]

The balanced reaction is:

[{"selector":"#anim-da169a08-4b9e-404c-8de0-da078512ee56","keyframes":{"opacity":[0,1]},"delay":0,"duration":1200,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-c0d3221b-f644-491e-92ae-87d1e61d65c2","keyframes":{"transform":["translate3d(-120.38217%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":1200,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-60ac1b8f-ff26-4287-9bcc-b5943af9c16b","keyframes":{"opacity":[0,1]},"delay":0,"duration":1200,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-8c746d42-8ac8-4c60-b2cb-d04645f5b86a","keyframes":{"transform":["translate3d(-112.35955%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":1200,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-32bcd6bd-8805-4c83-b087-e14ea598a98a","keyframes":{"opacity":[0,1]},"delay":0,"duration":1200,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-50ae4cb5-a68b-4243-ad2e-1a80d0b808a3","keyframes":{"transform":["translate3d(-1052.38048%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":1200,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-e6b43a81-15c3-42f4-89a6-c0fc9aa571c4","keyframes":{"opacity":[0,1]},"delay":0,"duration":1200,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-cb51856f-915e-4ba6-beea-c108a8c97e46","keyframes":{"transform":["translate3d(-1490.47555%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":1200,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-a8b3e9ca-d778-4a52-b6eb-98af6c437b7d","keyframes":{"opacity":[0,1]},"delay":0,"duration":1200,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-e7f092ac-c416-4125-a46c-d8ee91e3d7a3","keyframes":{"transform":["translate3d(-680.95207%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":1200,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-3d5b7acc-5273-4d59-89bc-87af0c04480b","keyframes":{"opacity":[0,1]},"delay":0,"duration":1200,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-3e07eac8-407b-4698-9912-834249f6d28e","keyframes":{"transform":["translate3d(-1171.42801%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":1200,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] 2 2 3 2

The shiny copper metal turns dull and greenish in colour when exposed to copper carbonate.

[{"selector":"#anim-0decbaa7-9709-491c-9ec3-a53a6706fa49","keyframes":{"opacity":[0,1]},"delay":0,"duration":1200,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-167b3891-bff0-4b9f-a5c2-bf97bdf9d355","keyframes":{"transform":["translate3d(-120.06369%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":1200,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}]

[{"selector":"#anim-0e3d7d64-e399-4505-829d-a1321361e9b1 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate3d(0%, 0, 0) translate(25%, 0%) scale(1.5)","translate3d(0%, 0, 0) translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.14,.34,.47,.9)","fill":"forwards"}] Download Aakash App Now

Read More Stories

[{"selector":"#anim-bfd81738-c5b4-4ebc-ab49-7a72b662a7e9","keyframes":{"opacity":[0,1]},"delay":0,"duration":2000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-141f5f94-a28e-4bb4-bc8b-f8f41e5176a1","keyframes":{"transform":["translate3d(-139.16668%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-6bc09cb2-1190-401b-b12f-1c10d2e0e5e9","keyframes":{"opacity":[0,1]},"delay":100,"duration":2000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-580f9360-78d1-4732-b017-2622dc12ecca","keyframes":{"transform":["translate3d(-157.54718%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":100,"duration":2000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-553e27c4-d16d-4617-9174-7dca1fa3ab51","keyframes":{"opacity":[0,1]},"delay":100,"duration":2000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-754cc98d-e2c6-4339-8fa1-6949985ba2d5","keyframes":{"transform":["translate3d(163.55930%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":100,"duration":2000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-b841ac8d-f9b3-4cf4-8d92-bf212a45b17c","keyframes":{"opacity":[0,1]},"delay":150,"duration":2000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-30dd7b60-93dd-48ad-9078-95d664dd2e88","keyframes":{"transform":["translate3d(165.78950%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":150,"duration":2000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] The D and F Block Elements Structure of Beryllium Chloride in Different Phase

If copper is kept open in the air, it slowly loses its shining brown surface and gains a green coating. It is due to the formation of the:

A

B

C

D

CuSO

CuCO

Cu(NO )

CuO

4

3

3

2