The Outer Shell Configuration Of The Most Electronegative Element Is

When would de Broglie wavelength of a moving electron become equal to that of a moving proton? Mass of electron =

 9.1095 × 10^–31 kg and mass of proton = 1.6725 × 10^–27 kg.  

How fast is an electron moving if it has a wavelength equal to the distance it travels in one second?

(mass of electron = 9.1 × 10^–31 kg) 

To which orbit the electron in the hydrogen atom will jump on absorbing 12.1 eV of energy? 

Nitrogen has the electronic configuration  and not  which is determined by

The valence shell electron of sodium has the quantum numbers

(n, l, m, s)

The ratio of the energy of photon of λ = 2000 Å to that of λ = 4000 Å is

Which of the following has largest de-Broglie wavelength, provided all have equal velocity?

Which of the following relates to photons both as wave motion and as a stream of particles?

The correct set of quantum numbers for the unpaired electron of Cl atom is

Which of the following electronic jump in a hydrogen atom will require the largest amount of energy?