Question

A maximum of 2electrons can only be accommodated in an orbit give reason

Answer 1

In chemistry and atomic physics, an electron shell, or a principal energy level, may be thought of as an orbit followed by electronsaround an atom's nucleus. The closest shell to the nucleus is called the "1 shell" (also called "K shell"), followed by the "2 shell" (or "L shell"), then the "3 shell" (or "M shell"), and so on farther and farther from the nucleus. The shells correspond with the principal quantum numbers (n = 1, 2, 3, 4 ...) or are labeled alphabetically with letters used in the X-ray notation (K, L, M, …).