What property does the following elements have in common li , c , f

Explanation:

The period number of an element in the periodic table is always equal to the number of main energy levels that the atoms have.

Li (lithium), C (carbon), and F (fluor) form part of the period 2 of the periodic table.

The complete  list of elements of the period 2 of the periodic table is  Li, Be, B, C, N, O, F, and Ne.

The periods are numbered from 1 through 7.

The elements of period 1 (H and He) have one main energy level, the elements in period 2 have two main energy levels, the elements in period 3 (Na, Mg, Al, Si, P, O, Cl, and Ne) have three main energy levels. So, as you can infere, the period number always equals the number of main energy levels of the atoms of the element.

a high pressure system is a dense air mass that is usually cooler and drier than the surrounding air. a low pressure system is a less dense air mass that is usually wetter and warmer than the surrounding air.

in general, areas that experience high atmospheric pressure also experience fair weather. low pressure systems can cause the formation of clouds and storms. air usually flows from areas of high pressure to areas of low pressure..

the answer would be 32*f