Question

If r, is the radius of the first orbit of hydrogen atom
then the radii of second, third and fourth orbits i
term of r, are
(2) 4 r., 9., 160,
(4) 2r, 6 r 8 r.
(3) 8 r., 271, 64 r.​

Answer 1

Answer:

The radii of second, third and fourth orbits in term of first orbit is:

Explanation:

Formula used for the radius of the  orbit will be,

  (in pm)

where,

= radius of  orbit

n = number of orbit

Z = atomic number

Radius of first orbit, n=1

..(1)

Radius of second orbit, n=2

(from(1))

Radius of third orbit, n=3

(from(1))

Radius of forth orbit, n=4

(from(1))

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