Question

The wavelength of the green line on the spectrum above is 540 nm. Determine the energy (in joules) for a photon emitted due to this transition. Be sure to In no more than two sentences explain what the existence of line spectrum rather than a continuous spectrum indicate About the energy of electros in an atom Write the ground state electron configuration for the following species (condensed form is acceptable). Also, indicate which orbital shape (I II. or III shown below) describes the highest energy electrons of each species in its ground state.

Answer 1

B) E = hc/ $\lambda$

E = 6.626 x 10^-34 J.s x 3.0 x 10⁸ m/s / 540 x 10^-9m

E = 3.68 x 10^-19 J

C) in line spectra when we give the light to atom it absorb the or emit the particular radiation.

if iy absorb radiation then dark lines observed in white light background.

if it emit radiation bright lines observed in dark background..

3) N = 1s²2s²2p³   energy of last electron represents p orbital so II

Cu = 1s²2s²2p⁶3s²3p⁶4s²3d¹⁰   energy of last electron represents d orbital so I

Ba =  1s²2s²2p⁶3s²3p⁶ 4s²3d¹⁰  4p⁶5s²4d¹⁰5p⁶6s²   energy of last electron represents s orbital so III