The radius of the first Bohr orbit of hydrogen atom is 0.59 Å. The radius of the third orbit of He^(+) will be

The radius of the first Bohr orbit of hydrogen atom is 0.59 Å. The ra

1.	The radius of the first Bohr orbit of hydrogen atom is 0.59 Å. The radius of the third orbit of He^(+) will be
Answer» `8.46 Å` `0.705 Å` `1.59 Å` `2.38 Å` SOLUTION :`r_(n) = (a_(0) n^(2))/(Z)= (0.59 B208Å xx 3^(2))/(2) = 2.38 B208Å`