Question

5. How many orbitals are contained in the 4d subshell? 5. What does it mean to say that the energy of the electrons in an atom is quantized? 7. Determine the energy of a photon that has a wavelength of 714 nm. The speed of light is 3.00 x 108 m/s and h = 6.63 x 10-34 J s.

Answer 1

a. For 4d sub shell, value for l ie azimuthal quantum number is 2( for d, l=2)

Therefore number of orbitals = 2l + 1= 2*2+1

Number of orbitals in 4d subshell =4+1=5

B. Energy of electron is quantized because electrons can exist on some specific orbits or shell only that have fixed amount of energy associated with them. When electron moved from one shell to another shell, they release or absorb specific energies which are known as quanta or photons and these photons can have integral values only.

C.

quen wavelengen R 714nm 14x16m. speed a light = c = 30x10" mst 0 6.69 X10-34 Us from Bohr's Theory Energy of photon - bc E = 6.63x10345sx 3X108 fos! 7140109 m [= 19.89 x 10-34+8 714 X109 E 19,89 x 10 34+ 8 + 9 714 1918 9 X 10-17 E = 0.0278x10-177 E = 2.78 x 10-19