Question

what is principal Quantum No. ??????​

Answer 1

Answer:

◾️ the principal quantum number (symbolized n) is one of four quantum numbers which are assigned to all electrons in an atom to describe that electron's state. As a discrete variable, the principal quantum number is always an integer.

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Answer 2

Answer:

Explanation:

it tells about the shell to which an electron belongs n is equal to 1,2,3,4,5 and so on this number helps to explain the main lines of this spectrum on the basis of electron jumps between these shells it gives the average distance of the electron from the nucleus largest the value of n larger is the distance from the nucleus it completely determine the energy in hydrogen atom or hydrogen like atom order of energy is 1 is less than 2 less than 3 less than 4 and so on