How many orbitals does the p subshell contain

p - subshell contains three orbitals 2px, 2py and 2pz.

Explanation:

Each p - subshell consists of two section better known as lobes which lie on either side of the plane passing through the nucleus. The three p-orbitals differ in the way the lobes are oriented whereas they are identical in terms of size, shape and energy. As the lobes lie along one of the x, y and z axis, these three orbitals are given the designations 2px, 2py and 2pz. Thus, we can say that there are three p - subshells whose axes are mutually perpendicular.

tracks, burrows, eggshells, nests, tooth marks, or gastroliths

on passing the small ampere of electric current through the tube made of ar and hg of cfl generates uv rays which excites the fluorescent and thus emits the high radiation by consumption of just 5- 12 w in comparison to incandescent light which requires more power such as around 40 - 55 w to lighten.

moreover the life span of fluorescent or cfl is around 8000 h whereas the life span of incandescent is around 1200 h

hence, the building installed with incandescent lights bears more electricity bill.