(33) If force of attraction between...
Question
Fullscreen

(33) If force of attraction between the electron and nucleus in 2nd orbit of Liz isf, force of attraction if electron present in 1st orbit of His (A) OF (B) 127 (D)

JEE/Engineering Exams
Chemistry
Solution
186
Rating
5.0 (4 ratings)
Fullscreen
formula of fore of atraition b/w elution and muleus is ( begin{aligned} F &=frac{k z e^{2}}{r^{2}} text { Where } k &=text { constant } z &=text { atomic number } end{aligned} ) = radius of sebit ( e= ) chage [ R_{n}=frac{a_{0} n^{2}}{z} quadleft(a_{0}=operatorname{comstant}right) ] Thus we get ( F=frac{k e^{2}}{a_{0}^{2}} frac{z^{2}}{n^{4}} ) for ( left[begin{array}{llll}2+ & 2 & =3 & text { and } & n=2end{array}, text { force }=fright. ) ( f=frac{k e^{2}}{a_{0}^{2}} frac{(3)^{3}}{(2)^{4}}=frac{k e^{2}}{a_{0}^{2}} frac{27}{16}= ) And for ( H, quad z=1, n=1 ) Folle ( quad=frac{k e^{2}}{a_{0}^{2}} frac{1^{3}}{1^{2}}=frac{k e^{2}}{a_{0}^{2}} ) ( begin{aligned} text { Fork } &=frac{k e^{2}}{a_{0}^{2}} frac{27}{16} times frac{16}{27} &=f times frac{16}{97}( text { foom } text { force } &=frac{16}{27} f end{aligned} )
Quick and Stepwise Solutions Just click and Send Download App OVER 20 LAKH QUESTIONS ANSWERED Download App for Free