Question

As the elements in Period 2 are considered in order from (left to right) lithium to fluorine, there is an increase in the

Answer 1

As we move from left to right in Period 2 of the periodic table, there is an increase in the number of electrons in the outermost energy level of the elements.

Step-by-step explanation:

As the elements in Period 2 of the periodic table are considered in order from left to right, there is an increase in the number of electrons in their outermost energy level. This trend can be observed as we move from lithium (Li) to fluorine (F).

Lithium has only one electron in its outermost energy level, while fluorine has seven electrons in its outermost energy level. The increase in the number of electrons in the outermost energy level affects the reactivity and chemical properties of these elements.

For example, lithium, with one electron in its outermost energy level, readily loses that electron to achieve stability, while fluorine, with seven electrons in its outermost energy level, readily gains one electron to achieve stability. This trend is known as the Electron Configuration.