Question

Plzz answer of this question...... plzzz

Answer 1

this pictures will help you

Answer 2

Bohr's model of an atom
Neil's bohr proposed the following postulates regarding the model of the atom
1. Only certain orbits known as discrete orbits of electrons are allowed inside the atom
2. while revolving in these discrete orbits the electrons do not radiate energy these discrete orbits or shells
The first orbit for(n=1) is represented by letter k . similarly for n=2 it is L shell for n=3 it is M shell and for n=4 it is N shell .These orbits or shells are also called energy levels
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