Question

How many electrons can be accommodated in n=3 shell in Bohr model of atom.​

Answer 1

Answer:

18

The equation “maximum number of electrons that can be in a shell = 2n2” gives the maximum number in the n = 3 shell to be: Maximum number of electrons = 2n2 = 2(3)2 = 2(9) = 18.

Answer 2

The number of electrons that can be accommodated in 3rd shell is 8 electrons.

• Bohr through his model of an atom explained that each orbit is fixed surrounding the atom and all orbits contain electrons.
• The 3rd shell in Bohr's model is called the M shell.
• This is the third-highest level and the electron is farther than the nucleus of the atom and hence has lower energy than the first and second shell or orbits.
• The third is an M shell which can at maximum accommodate 18 electrons.
• The formula for calculating the number of electrons is:

     => Number of electrons= 2(n)²

     => n= shell number (n=3)

     => Number of electrons = 2(3)² = 2 × 9 = 18 electrons

• The first and second shells are the K shell and L shell respectively.
• Hence, when the shell number is three it atom can accommodate 18 electrons.