Question

define energy level and sub energy level with the help of diagram with details​

Answer 1

Answer:

the diagram representing the arrangement of orbitals in the order of their increasing energies are called energy level diagram

A sublevel is an energy level defined by quantum theory. In chemistry, sublevels refer to energies associated with electrons. In physics, sublevels may also refer to energies associated with the nucleus.

Explanation:

What is energy level diagram?

In chemistry, an electron shell, or energy level, may be imagined as an orbit with electrons around the nucleus of an atom. The closest shell to the nucleus is called the “K shell” followed by the “L shell” then the “M shell” and so on away from the nucleus. The shells can be denoted by alphabets (K, L, M, …) or quantum numbers (n = 1, 2, 3, 4 and so on).

Each shell contains a fixed number of electrons –

The first shell “K shell” contains two electrons,

The second shell “L shell” contains eight electrons,

The third shell “M shell” contains 18 electrons and so on.

The general formula to know the number of electrons that can be held in each shell is given by 2(n2). Electrons get attracted to the nucleus of the atom and the electrons occupy outer shells inner shells have already been completely occupied by other the electrons.

An atom or molecule or ion and its electrons are said to be in the ground state when they are at the lowest possible energy level. If they are at a higher energy level, they are said to be excited. Electrons that have higher energy than the ground state are said to be excited. They are then called degenerate energy levels occurs when more than one quantum mechanical state is at the same energy.