Question

calculate the energy associated with the first orbit of He+.what is the radius of this orbit? anyone plse give me a answr

Answer 1

energy in first orbit of helium is given by this
Hope it helps you

Answer 2

Answer:

-54.4 eV is the energy associated with the first orbit of Helium and radius of this orbit is 26.45 pm.

Explanation:

Energy of the nth shell:$E_n$

$E_n=-13.6\times \frac{Z^2}{n^2}eV$

Radius of the nth shell: $r_n$

$r_n=\frac{52.9\times n^2}{Z} pm$

$r_n$ = radius of the nth shell

Z = Atomic number

The energy associated with the first orbit of $He^+$

$E_1=-13.6\times \frac{2^2}{1^2}ev=-54.4 eV$

The radius of first orbit in $He^+$ ion is;

$r_1=\frac{52.9\times 1^2}{2} pm=26.45 pm$