B Charged metal sphere

When we make a metal sphere positively charged by electricity, why doesn't it react with oxygen or any other element in air as metal has positive charges and one of the element in air must react with sphere as I think an ion can never stand in air without reacting?
If it reacts, why doesn't the capacitor plates react with air??
 

davenn

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When we make a metal sphere positively charged by electricity, why doesn't it react with oxygen or any other element in air
why would it ?

gasses in the air around you is neutrally charged

why doesn't it react with oxygen or any other element in air as metal has positive charges and one of the element in air must react with sphere as I think an ion can never stand in air without reacting?

have a think and consider my previous comment, then re-ask yourself ... Why must it react ?

If it reacts, why doesn't the capacitor plates react with air??
as you have now discovered .... it doesn't

Caveat .... if the air around the sphere is very moist ( high humidity) there will possibly/probably be some leakage from the sphere
and probably mainly down the pole/other thing that is supporting the sphere


Dave
 
why would it ?

gasses in the air around you is neutrally charged



have a think and consider my previous comment, then re-ask yourself ... Why must it react ?



as you have now discovered .... it doesn't

Caveat .... if the air around the sphere is very moist ( high humidity) there will possibly/probably be some leakage from the sphere
and probably mainly down the pole/other thing that is supporting the sphere


Dave
Actually i think that nature will never allow an ion to stay in air without reacting. As charges are present it must react with something , probably with air as air has surrounded it and air also have some moisture in it.
If capacitor reacts, conductivity of plates should be effected as new compund is formed and mass of plates must change. Isn't it??
 

davenn

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Actually i think that nature will never allow an ion to stay in air without reacting. As charges are present it must react with something ,
I have a feeling you don't know what an ion is ?

describe to me what you think it is :smile:

If capacitor reacts, conductivity of plates should be effected as new compound is formed and mass of plates must change. Isn't it??
no
 
I have a feeling you don't know what an ion is ?

describe to me what you think it is :smile:



no

Ion is an atom with net charge due to gain or loss of electrons. When sphere is charged positively, it has lesser electrons than what it had in neutral state, so this means some atoms must habe lost their valance electons.
Isn't it true
 

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