Question

how many shells are their in an atom

Answer 1

There are 4 shells in an atom.They are K,L,M,N shells

Answer 2

There are 4 shells that are present in an atom, namely the K, L, M and the N shells Each shell can contain only a fixed number of electrons: The first shell can hold up to two electrons, the second shell can hold up to eight (2 + 6) electrons, the third shell can hold up to 18 (2 + 6 + 10) and so on. The general formula is that the nth shell can in principle hold up to 2(n2) electrons. Hope this answered your question!