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mayankdevnani Group Title

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

  • 2 years ago
  • 2 years ago

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

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

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

    • 2 years ago
  4. mayankdevnani Group Title
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    @vishweshshrimali5 @ganeshie8

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

    • 2 years ago
  6. Areesha.1D Group Title
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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.

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

    • 2 years ago
  8. mayankdevnani Group Title
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    @nubeer

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

    • 2 years ago
  10. nubeer Group Title
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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.

    • 2 years ago
  11. nubeer Group Title
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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.

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

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

    • 2 years ago
  14. nubeer Group Title
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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.?

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

    • 2 years ago
  16. mayankdevnani Group Title
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    looseing right!!

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

    • 2 years ago
  18. nubeer Group Title
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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.

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

    • 2 years ago
  20. nubeer Group Title
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    :P

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

    • 2 years ago
  22. nubeer Group Title
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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?

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

    • 2 years ago
  24. nubeer Group Title
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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.

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

    • 2 years ago
  26. mayankdevnani Group Title
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    @nubeer

    • 2 years ago
  27. mayankdevnani Group Title
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    @sauravshakya

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

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

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

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

    • 2 years ago
  32. nubeer Group Title
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    yes.

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

    • 2 years ago
  34. mayankdevnani Group Title
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    gain

    • 2 years ago
  35. nubeer Group Title
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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.

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

    • 2 years ago
  37. mayankdevnani Group Title
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    13

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

    • 2 years ago
  39. mayankdevnani Group Title
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    13 is atomic number

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

    • 2 years ago
  41. mayankdevnani Group Title
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    @nubeer

    • 2 years ago
  42. nubeer Group Title
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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.

    • 2 years ago
  43. mayankdevnani Group Title
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    mention not

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

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

    • 2 years ago
  46. nubeer Group Title
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    hmm well yes.

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

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

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

    • 2 years ago
  50. mayankdevnani Group Title
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    oh i see

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

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

    • 2 years ago
  53. mayankdevnani Group Title
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    first Ca

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

    • 2 years ago
  55. nubeer Group Title
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    yes right..

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

    • 2 years ago
  57. mayankdevnani Group Title
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    last its silicon

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

    • 2 years ago
  59. nubeer Group Title
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    yes..

    • 2 years ago
  60. mayankdevnani Group Title
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    thnx...

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

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

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

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

    • 2 years ago
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