Which alkaline earth metal is in period 6
The Correct Answer and Explanation is:
The alkaline earth metal in Period 6 of the periodic table is Barium (Ba).
Explanation
To understand why Barium (Ba) is the correct answer, we need to explore two key ideas: alkaline earth metals and periods on the periodic table.
Alkaline earth metals are elements found in Group 2 of the periodic table. This group includes the elements:
- Beryllium (Be)
- Magnesium (Mg)
- Calcium (Ca)
- Strontium (Sr)
- Barium (Ba)
- Radium (Ra)
These elements are characterized by having two valence electrons in their outer shell, which they readily lose to form +2 cations. As a result, they are quite reactive, though less so than alkali metals (Group 1). Alkaline earth metals are all shiny, silvery-white, and somewhat soft metals. They are typically found in nature as compounds rather than in pure form due to their reactivity.
Now, looking at Period 6 — the sixth row of the periodic table — we find that it contains 32 elements, beginning with cesium (Cs) and ending with radon (Rn). Among these 32 elements, we look for the Group 2 element in this period.
That element is Barium (Ba), which has the atomic number 56.
Barium exhibits the common characteristics of alkaline earth metals. It is a soft, silvery metal that is very reactive with water and air, which is why it’s typically stored under oil or in airtight containers. In compounds, Barium forms the Ba²⁺ ion, just like other alkaline earth metals form +2 ions.
In practical applications, barium compounds are used in medical imaging (like barium sulfate for X-rays), fireworks (green color), and drilling fluids for oil and gas wells.
To summarize, Barium (Ba) is the alkaline earth metal located in Period 6, and it plays important roles in both scientific and industrial contexts.
