bohr -bury scheme of distribution of electrons?

Asked by geetanjaliajmani | 30th Dec, 2015, 11:19: PM

Expert Answer:

Distribution of Electrons in Orbits

 

  • According to Bohr's model, electrons occupy certain stable orbits or shells. Each shell has definite energy.
  • These orbits or shells are represented by the letters K, L, M, N, ...  or  the numbers 1, 2, 3, 4, …
  • The maximum number of electrons present in the shell is given by the formula (2 n2), where n is the orbit number or shell number.
  • The maximum numbers of electrons in different shells are as follows:
  • The first orbit or K shell will have 2 × 12 = 2 electrons.
  • The second shell will have 2 × 22 = 8 electrons.
  • The third shell will have 2 × 32 = 18 electrons.
  • The fourth shell will have 2 × 42 = 32 electrons and so on.
  • The maximum number of electrons that can be accommodated in the outermost orbit is 8.
  • The orbits or shells are filled in a step-wise manner.
  • Electrons are not accommodated in a given shell unless the inner shells are filled.

Answered by Vaibhav Chavan | 31st Dec, 2015, 10:38: AM