According to de - Broglie , the de - Broglie wavelength for electron in an orbit of hydrogen atom is `10^(-9) m`. The principle quantum number for this electron is

The de-Broglie wavelength of electron in gound state of an hydrogen atom is

The de-Broglie wavelength of electron in gound state of an hydrogen atom is

According to de broglie , the de broglie wavelength for electron in an orbit of radius 5.3xx10^(-11) m of hydrogen atom is 1 Å. What is the principal quantum number for this electron ?