Question

If the radius of first, second, third and fourth orbits of hydrogen atom are r1, r2, r3, and r4, respectively, then their correct increasing order will be.
(a) r4 <r3 <r2 <r1 (b) r1 <r2 <r3 <r4
(c) r1 <r2 > rz <r4 (d) Equal in all​

Answer 1

Answer:

(c)

Explanation:

radius increases with the increment in the number of orbitals

Answer 2

Answer:

b

Explanation:

r =( n^2* h^2)/4*π^2*m*e^2*Z

So radius increases with increase in number of orbits.