What period is F (fluorine) in?
A. 17
B. 7 A
C. 7 B
D. 2
Answer (1)
Fluorine (F) is in the second period of the periodic table.
The period number corresponds to the highest energy level occupied by an electron.
Fluorine's electron configuration is 1 s 2 2 s 2 2 p 5 , with the highest energy level being 2.
The period of Fluorine (F) is 2 .
Explanation
Understanding the Question The question asks for the period of the element Fluorine (F) in the periodic table. The options are A. 17, B. 7 A, C. 7 B, D. 2
Understanding the Periodic Table The periodic table is organized into periods (rows) and groups (columns). The period number corresponds to the highest energy level occupied by an electron in the element's electron configuration.
Locating Fluorine Fluorine (F) is located in the second period of the periodic table. Its electron configuration is 1 s 2 2 s 2 2 p 5 , so the highest energy level occupied is 2.
Determining the Period Therefore, the period of Fluorine (F) is 2.
Final Answer The correct option is D. 2
Examples
Understanding the periodic table and the properties of elements like Fluorine is crucial in chemistry. For example, knowing the period and group of an element helps predict its reactivity and bonding behavior. In real-world applications, this knowledge is used in designing new materials, developing pharmaceuticals, and understanding environmental processes. For instance, the high reactivity of Fluorine, due to its position in the periodic table, makes it useful in various industrial processes and in the creation of fluorinated compounds with unique properties.
