In the Gold foil experiment of Geiger and Marsden, that paved the way for Rutherford's model of an atom, - 1.00% of the Cl-particles were found to deflect at angles `gt 50^@`. If one mole of a particles were bombarded on the gold foil, the number of `alpha`-particles that would deflect at angles less than `50^@` is

Answer

`5.96 XX 10^(23)`

Explanation

% of a particles deflected more than 50° = 1%
% of a particles deflected less than `50^@`
= 100 -1 = 99%
Number of d-particles bombarded = 1 mole
` = 6.022 xx 10^(23 ) ` particles Number of particles that deflected at an angle less at than `50^@`
`=(99)/(100 ) xx 6.022 xx 10^(23) = ( 596.178 )/(100 ) xx 10^(23) = 5.96 xx 10^(23)`