In the Gold foil experiment of Geiger and Marsden, that paved the way for Rutherford’s model of an atom, ~ 1.00% of the α-particles were found to deflect at angles > 50º. If one mole of α- -Science

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Total number of α particles used for bombardment = 1 mole 1 mole=6.022×1023 particles number of α particles deflected at angles greater than 50°(>50°)= 1% Number of α particles deflected at angles greater than 50° = 100-1 = 99% The actual number of α particles deflected at angles less than 50°= 99/100 × 6.022 × 1023 =5.96 × 1023

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