In the Gold foil experiment of Geiger and Mar | vedclass

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(C) The percentage of $\alpha$-particles deflected at angles greater than $50^o$ is $1\%$.Therefore,the percentage of $\alpha$-particles deflected at

Vedclass · Accepted Answer

$5.96 	imes 10^{23}$

Vedclass · Answer

(C) The percentage of $\alpha$-particles deflected at angles greater than $50^o$ is $1\%$.Therefore,the percentage of $\alpha$-particles deflected at angles less than $50^o$ is $100\% - 1\% = 99\%$.One mole of $\alpha$-particles contains $6.022 	imes 10^{23}$ particles (Avogadro's number).The number of $\alpha$-particles that deflect at angles less than $50^o$ is calculated as:$	ext{Number} = \frac{99}{100} 	imes 6.022 	imes 10^{23}$$	ext{Number} = 0.99 	imes 6.022 	imes 10^{23}$$	ext{Number} = 5.96178 	imes 10^{23} \approx 5.96 	imes 10^{23}$ particles.

Column $A$	Column $B$
$(a)$ Ernest Rutherford	$(i)$ Indivisibility of atoms
$(b)$ $J$.$J$. Thomson	$(ii)$ Stationary orbits
$(c)$ Dalton	$(iii)$ Concept of nucleus
$(d)$ Neils Bohr	$(iv)$ Discovery of electrons
$(e)$ James Chadwick	$(v)$ Atomic number
$(f)$ $E$. Goldstein	$(vi)$ Neutron
$(g)$ Mosley	$(vii)$ Canal rays

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