1)the energy of an alpha particle is 1 2×10^-13J up to what closet distance can it reach the nucleus of - Physics - Atoms

Question

1)the energy of an alpha particle is 1 2×10^-13J up to what
closet distance can it reach the nucleus of silver(Z=47)?
Ans is 1 8×10^-13

Govind · Accepted Answer

Energy of the alpha particle, E=1
2×10-13 JAtomic number of silver, Z=47Distance of closest approach is given byr=Ze2e4π∈0×12mv2⇒r=9×109×47×21
6×10-1921 2×10-13⇒r=1804
8×10-16 m⇒r=1 8×10-13 m

1)the energy of an alpha particle is 1.2×10^-13J.up to what closet distance can it reach the nucleus of silver(Z=47)? Ans is 1.8×10^-13.

1)the energy of an alpha particle is 1.2×10^-13J.up to what closet distance can it reach the nucleus of silver(Z=47)?
Ans is 1.8×10^-13.