Question

What is 2n2 rule of Bohr's and bury?

Answer 1

Answer:

2n^2 Rule: In Bohr's model of atom, electrons are revolving around the nucleus through orbits or energy shells named as K,L,M,N...or 1,2,3,4... and so on. For each orbit, there is specified number of electrons given by the formula 2n^2 (n=1,2,3,4.. and so on). For more understanding,let us take an example.

In the orbit M or 3 the number of electrons permitted to revolve is given by 2×3^2=18. So, the number of electrons in M shell should not be exceeded from 18. Similarly,for other orbits, number of electrons is given by the formula 2n^2.