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mayankdevnani

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

  • one year ago
  • one year ago

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

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

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

    • one year ago
  4. mayankdevnani
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    @vishweshshrimali5 @ganeshie8

    • one year ago
  5. mayankdevnani
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    ok. nubeer what is the valency of mg

    • one year ago
  6. Areesha.1D
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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.

    • one year ago
  7. mayankdevnani
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    just copy and paste @Areesha.1D

    • one year ago
  8. mayankdevnani
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    @nubeer

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

    • one year ago
  10. nubeer
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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.

    • one year ago
  11. nubeer
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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.

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

    • one year ago
  13. mayankdevnani
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    ok..so what is the valency of cl

    • one year ago
  14. nubeer
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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.?

    • one year ago
  15. Areesha.1D
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    @nubeer let him figure it out.

    • one year ago
  16. mayankdevnani
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    looseing right!!

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

    • one year ago
  18. nubeer
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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.

    • one year ago
  19. Areesha.1D
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    @nubeer exactly! have fun llol

    • one year ago
  20. nubeer
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    :P

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

    • one year ago
  22. nubeer
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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?

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

    • one year ago
  24. nubeer
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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.

    • one year ago
  25. mayankdevnani
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    so finally what is the valency of cl

    • one year ago
  26. mayankdevnani
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    @nubeer

    • one year ago
  27. mayankdevnani
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    @sauravshakya

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

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

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

    • one year ago
  31. mayankdevnani
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    al its electronic confugiration is |dw:1354100607658:dw|

    • one year ago
  32. nubeer
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    yes.

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

    • one year ago
  34. mayankdevnani
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    gain

    • one year ago
  35. nubeer
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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.

    • one year ago
  36. nubeer
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    now look in which group Al is in the periodic table.

    • one year ago
  37. mayankdevnani
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    13

    • one year ago
  38. nubeer
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    13? or 3?

    • one year ago
  39. mayankdevnani
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    13 is atomic number

    • one year ago
  40. Areesha.1D
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    Oh lord

    • one year ago
  41. mayankdevnani
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    @nubeer

    • one year ago
  42. nubeer
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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.

    • one year ago
  43. mayankdevnani
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    mention not

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

    • one year ago
  45. mayankdevnani
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    so its valency is 3

    • one year ago
  46. nubeer
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    hmm well yes.

    • one year ago
  47. mayankdevnani
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    but howz that...it loose its electrons

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

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

    • one year ago
  50. mayankdevnani
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    oh i see

    • one year ago
  51. mayankdevnani
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    now its my chance give me some example

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

    • one year ago
  53. mayankdevnani
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    first Ca

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

    • one year ago
  55. nubeer
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    yes right..

    • one year ago
  56. mayankdevnani
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    thnx....

    • one year ago
  57. mayankdevnani
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    last its silicon

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

    • one year ago
  59. nubeer
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    yes..

    • one year ago
  60. mayankdevnani
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    thnx...

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

    • one year ago
  62. mayankdevnani
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    and also give me medal for my hard work

    • one year ago
  63. nubeer
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    i am glad.. you are welcome ..

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

    • one year ago
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