Question

What property does the following elements have in common Li , C , F

Answer 1

Answer:

• The elements Li,  C, and F, are all in the period (row) # 2 of the periodic table, and, in consequence,  those atoms have two energy levels (main quantum number), n = 1 and n = 2, around the nucleus.

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.

Answer 2

Answer:

The valance electronis for each element is located in the same energy level.

Explanation:

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