AP EAMCET2013PhysicsNuclear Physics
The radius of ₇₂ Te ¹²⁵ nucleus is 6 fermi. The radius of ₁₃ Al ²⁷ nucleus in meters is
Options
- A3.6 10⁻¹² ~m
- B3.6 10⁻¹⁵ ~m
- C7.2 10⁻⁸ ~m
- D7.2 10⁻¹⁵ ~m
Correct answer
B. 3.6 10⁻¹⁵ ~m
Step-by-step solution
The relation between radius (R) and atomic number (A) is R₁ R₂ = ( A₁ A₂ )^ 1 / 3 Given, R₁=6 fermi, A₁=125, A₂=27 aligned 6 R₂ & = ( 125 27 )^ 1 / 3 = 5 3 R₂ & = 6 3 5 = 18 5 =3.6 fermi & =3.6 10⁻¹⁵ ~m aligned