Each electron in an atom is described by four different quantum numbers. The first three (n, l, ml) specify the particular orbital of interest, and the fourth (ms) specifies how many electrons can occupy that orbital.able of Allowed Quantum Numbers. n l ml Number of orbitals Orbital Name Number of electrons 1 0 0 1 1s 2 2 0 0 1 2s 2 1 -1, 0, +1 3 2p 6 3 0 0 1 3s 2 1 -1, 0, +1 3 3p 6 2 -2, -1, 0, +1, +2 5 3d 10 4 0 0 1 4s 2 1 -1, 0, +1 3 4p 6 2 -2, -1, 0, +1, +2 5 4d 10 3 -3, -2, -1, 0, +1, +2, +3 7 4f 14.
Rat droppings are a key sign of a rat infestation; the mess and debris they leave in their wake is unmistakable. In addition to scattered nesting materials; debris from chewing, feeding and gnawing; rodents excrete urine and feces every few steps they take along their habitual paths of travel.
~If the rat approaches you, he is a fancy rat.~. Coloring: Most pet rats are not a variegated brown in color. Pet rats can be found in whites, beiges, peaches, tans, browns, blacks, and greys. The rat pictured above, however, is one exception which is why you can't just base your assessment on coloring.If the rat is fat, he is a fancy rat.~. Ears and Eyes: A pet rat's ears, unless he's simply never been handled, will appear very 'soft' (not rigid). Some rats have rounder ears to the sides of their heads as well. A pet rat's eyelids are generally a bit more relaxed.