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mayankdevnani

  • 2 years ago

How to find the valency of an element?? Also give me some examples...

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  1. nubeer
    • 2 years ago
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    valancey is something or the spots left to be filled by electrons in a the last shell

  2. nubeer
    • 2 years ago
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    if you have some question already u can tell that way would be easier to tell ..

  3. mayankdevnani
    • 2 years ago
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    no, i have not any particular question just give some examples.

  4. mayankdevnani
    • 2 years ago
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    @vishweshshrimali5 @ganeshie8

  5. mayankdevnani
    • 2 years ago
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    ok. nubeer what is the valency of mg

  6. Areesha.1D
    • 2 years ago
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    1) Find out the electronic configuration. That is the number of electrons for that ion. Electronic config. for Mg is 2,8,2. 2) Now see how many electrons you get in the last orbit. 3) That number become your valency. Mg is +2. If the last is more than four then it means it is the negative ion and hence check how many electrons are needed to stabilize that ion. For eg. Chlorine is 2,8,7. Therefore to complete the octet, it needs 1 electron and hence valency of chlorine is -1. You need to see weather the number of electrons in last orbit is more than, less than or equal to 4. If more than it is a negative ion and its valency can be -1,-2,-3. If less than 4 than valency can be +1,+2,+3. And if equal to 4 than it is a metalloid which acts as a metal as well as a non-metal. Eg.--- silicon. Valency of Na is +1 coz its electronic config. is 2,8,1. And now you find out for V as a practice. Valency is the combining capacity of an element and valence electrons are the number of electrons in the last orbit which are lost, gained or shared during the course of a reaction.

  7. mayankdevnani
    • 2 years ago
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    just copy and paste @Areesha.1D

  8. mayankdevnani
    • 2 years ago
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    @nubeer

  9. Areesha.1D
    • 2 years ago
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    @mayankdevnani yeah, i brought you information you needed, yet were incapable of finding yourself.

  10. nubeer
    • 2 years ago
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    lol what she is said is right.. ok few things you should know is The valency of an element is the measure of electrons it needs or needs to loose to obtain a stable structure.. what is stable structure.. stable structure is when any atom have 8 electrons in the last shell.

  11. nubeer
    • 2 years ago
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    so if we take Mg.. it has configuration 2,8,2 means it has 2 electrons in the outer most shell.. whether Mg can loose 2 electrons or gain 6 more.. it's easy to loos 2 rather then gaining 6 electrons so Mg preferes to loose.. so when Mg loose it will get a charge of+2 on it.

  12. nubeer
    • 2 years ago
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    group 1 to 3 looses electrons these groups also called metals.. and the non-metals looses electrons.

  13. mayankdevnani
    • 2 years ago
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    ok..so what is the valency of cl

  14. nubeer
    • 2 years ago
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    Cl.. 2,8,7.. tell me what u think its easy for him to loose or gain to achieve it's outer shell to be filled by 8 electrons.?

  15. Areesha.1D
    • 2 years ago
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    @nubeer let him figure it out.

  16. mayankdevnani
    • 2 years ago
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    looseing right!!

  17. nubeer
    • 2 years ago
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    yes @Areesha.1D i have told him all the details won't tell answer will just walk him through..

  18. nubeer
    • 2 years ago
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    hmmm nooo.. do u think he will just break 7 parts of it structure and not just having 1 more electron.. llook u have to think loosing and gaining is same it's not about tough.. think which is easier way to have 8 electrons in outer shell.. whther he can just gain 1 and have 8 or loose 7 electrons.

  19. Areesha.1D
    • 2 years ago
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    @nubeer exactly! have fun llol

  20. nubeer
    • 2 years ago
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    :P

  21. mayankdevnani
    • 2 years ago
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    hmmm, he can just gain 1 and have 8 .right

  22. nubeer
    • 2 years ago
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    yes.. so its easy and when any atom gain an electron it get's a positive charge.. so what charge you think Cl will get?

  23. mayankdevnani
    • 2 years ago
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    i don't know!!! plz tell me and give me another example and i can do this..k

  24. nubeer
    • 2 years ago
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    look when electron is loose positive charge appears and when gains a negative charge appears.. so Cl gain 1 electron so it will get -1 charge.. u can take any if by any chance hypothetcially Cl gains 4 electron then it gets -4 charge and if it loose 7 electron so will get +7 charge.. get it? do for Al.

  25. mayankdevnani
    • 2 years ago
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    so finally what is the valency of cl

  26. mayankdevnani
    • 2 years ago
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    @nubeer

  27. mayankdevnani
    • 2 years ago
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    @sauravshakya

  28. nubeer
    • 2 years ago
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    i think i mentioned the valency in the last post.. did you read it? it has just gain 1

  29. Areesha.1D
    • 2 years ago
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    omg -_- @mayankdevnani put a BIT of effort in, look how well @nubeer explained !!!

  30. mayankdevnani
    • 2 years ago
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    kkk...my chance to find the valency of al..plz wait

  31. mayankdevnani
    • 2 years ago
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    al its electronic confugiration is |dw:1354100607658:dw|

  32. nubeer
    • 2 years ago
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    yes.

  33. nubeer
    • 2 years ago
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    have to make 8 in last shell.. so right now 3 in last shell so easy to loose or gain?

  34. mayankdevnani
    • 2 years ago
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    gain

  35. nubeer
    • 2 years ago
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    hmm how much have to gain to get 8? it would have to take 5 more .. so no.. its better to loose look group 1-3 will loose electrons.. and group 5-8 gains electrons.. made more easy for u.

  36. nubeer
    • 2 years ago
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    now look in which group Al is in the periodic table.

  37. mayankdevnani
    • 2 years ago
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    13

  38. nubeer
    • 2 years ago
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    13? or 3?

  39. mayankdevnani
    • 2 years ago
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    13 is atomic number

  40. Areesha.1D
    • 2 years ago
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    Oh lord

  41. mayankdevnani
    • 2 years ago
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    @nubeer

  42. nubeer
    • 2 years ago
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    nooo not atomic number.. do you know about groups in a periodic table and sorry.. my internet is a liittle slow.

  43. mayankdevnani
    • 2 years ago
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    mention not

  44. nubeer
    • 2 years ago
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    so what about group numbers do you know of them?

  45. mayankdevnani
    • 2 years ago
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    so its valency is 3

  46. nubeer
    • 2 years ago
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    hmm well yes.

  47. mayankdevnani
    • 2 years ago
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    but howz that...it loose its electrons

  48. nubeer
    • 2 years ago
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    yes how many it loose? 3 .. and when any atome looses it gets a positive charge..

  49. nubeer
    • 2 years ago
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    http://www.chem4kids.com/files/elem_pertable.html this is something about groups if you don't know.

  50. mayankdevnani
    • 2 years ago
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    oh i see

  51. mayankdevnani
    • 2 years ago
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    now its my chance give me some example

  52. nubeer
    • 2 years ago
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    ok try Ba, Ca, Na , K, Cr, B, N, Br.. try any u want.

  53. mayankdevnani
    • 2 years ago
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    first Ca

  54. mayankdevnani
    • 2 years ago
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    electronic confugiration-|dw:1354101724985:dw| so it looses electrons and have a positive charge of 2+ right!!

  55. nubeer
    • 2 years ago
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    yes right..

  56. mayankdevnani
    • 2 years ago
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    thnx....

  57. mayankdevnani
    • 2 years ago
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    last its silicon

  58. mayankdevnani
    • 2 years ago
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    electronic configuration-|dw:1354101886249:dw| so it looses electrons and have a positive charge of 4+ right!!!

  59. nubeer
    • 2 years ago
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    yes..

  60. mayankdevnani
    • 2 years ago
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    thnx...

  61. mayankdevnani
    • 2 years ago
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    i understand very nicely.. thnx @nubeer and @Areesha.1D

  62. mayankdevnani
    • 2 years ago
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    and also give me medal for my hard work

  63. nubeer
    • 2 years ago
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    i am glad.. you are welcome ..

  64. Areesha.1D
    • 2 years ago
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    lol thank the Dear Lord above XD congratulations!

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