8/18/2019 VBQ Class 11 Atomic Structure

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(STRUCTURE OF ATOM)

Q1.While attending the physics class on optics a stdent !as taght that light !ith esta"lished !a#e

nat$e shold ha#e pa$ticle nat$e also. %&&ediately an idea ca&e to the &ind o' the stdent that &atte$ 

!ith esta"lished pa$ticle nat$e shold ha#e !a#e nat$e also. A'te$ co&pleting his stdies he p"lished a

$esea$ch pape$ stating the dal nat$e o' &atte$ and late$ he !as a!a$ded o"el $i*e 'o$ his !o$+.(i) a&e the scientist !ho stated the dal nat$e o' &atte$.

(ii) ,i#e the &athe&atical state&ent o' the dal nat$e o' &atte$.(iii) W$ite the type o' pa$ticles 'o$ !hich this p$inciple is applica"le.

(i#) Mention the #ale associated !ith this p$inciple.

Q-. ,ided "y eisen"e$g/s nce$tainty p$inciple and de0$oglie/s theo$y o' dal nat$e o' pa$ticles

Sch$odinge$ p$oposed !a#e e2ation. To get p$ope$ soltion o' this e2ation intege$ called 2ant&

n&"e$s !e$e $e2i$ed.

(i) a&e the 2ant& n&"e$s.

(ii) W$ite the gene$al #ales assigned to the 2ant& n&"e$s.

(iii) Mention the #ale o$ #ales associated !ith !a#e e2ation.

Q3. A'te$ the disco#e$y o' elect$on and p$oton Si$ 4.4. Tho&son p$oposed the pl& pdding &odel o' the

ato& .t this ato&ic &odel !as a"andoned !hen Rthe$'o$d pe$'o$&ed the alpha pa$ticle scatte$inge5pe$i&ent.

(i) a&e the &odel o' the ato& p$oposed "y the Rthe$'o$d.

(ii) Mention the &ain 'eat$es OF TE ATOM%C MO6E7 p$oposed "y Rthe$'o$d.

(iii) W$ite the #ale associated !ith Rthe$'o$d/s &odel o' the ato&.

Q8. S+&a$9 a stdent o' class :% science has lea$nt to !$ite the elect$onic con'ig$ation o' the ele&ents

in the che&ist$y class. o!9 e '$the$ !anted to +no! the $les 'o$ 'inding the g$op n&"e$s. On the

ne5t day he discssed his p$o"le& !ith his teache$. The teache$ told his the $les 'o$ 'inding the g$op

n&"e$. S+&a$9 then got satis'ied.

(i) What $les !e$e told to S+&a$ "y his teache$;

(ii) What ato& is indicated "y the 'ollo!ing elect$onic con'ig$ation;

(iii) What #ales a$e displayed "y S+&a$.