EVERYDAY SCIENCE

Detailed explanation-1: -(d) Electrons move around the nucleus in specified circular paths called orbits or shells or energy levels and are designated as K, L, M, N shells respectively.

Detailed explanation-2: -Answer and Explanation: The term for the regions around the nucleus that corresponds to specific energy levels are the electron orbitals.

Detailed explanation-3: -As electron revolving in a shell is associated with a definite amount of energy. The energy changees when it jumps to another shell that is so say when it goes from one level of energy level to another. Thus shell also gives the energy of a electron besides its location and are therefore called energy levels.

Detailed explanation-4: -Energy levels are nothing but the fixed distances of electrons from the nucleus of an atom. The energy levels are also called electron shells. An electron can move in one energy level or to another energy level, but it can not stay in between two energy levels.

Detailed explanation-5: -energy level, also called energy state, in physics, any discrete value from a set of values of total energy for a subatomic particle confined by a force to a limited space or for a system of such particles, such as an atom or a nucleus.