Question

Radius of the first orbit of a hydrogen atom is 0.53å. What is the radius of the second orbit of he+ion

Answer 1

Here answer is 0.265A°

Apply formula r= 0.529×n/Z

Please marke as brainliast

Answer 2

Answer:

1.06 A° is the radius of the second orbit of helium ion.

Explanation:

Formula used for the radius of the $n^{th}$ orbit will be,

$r_n=\frac{n^2\times 0.53\AA}{Z}$

where,

$r_n$ = radius of $n^{th}$ orbit

n = number of orbit

Z = atomic number

The radius of the second orbit of hydrogen atom:

Z = 1, n = 1

$r_1=\frac{1^2\times 0.53 \AA}{1}$

$r_1=0.53 \AA$

The radius of the second orbit of $He^+$:

Z = 2 , n= 2

$r_2=\frac{2^2\times 0.53 \AA}{2}$

$r_2=1.06\AA$

1.06 A° is the radius of the second orbit of helium ion.