Question

Radius of the first Bohr’s orbit of hydrogen atom is

• A. $1.06Å$
• B. $0.22Å$
• C. $0.28Å$
• D. $0.53Å$

Answer 1

Answer: (D)

$0.53Å$

Answer 2

Bohr’s radius of the hydrogen atom

$r = \frac{n^{2} \times 0.529Å}{z}$; Where z = Atomic number,

n = Number of orbitals