Give the symbol of the element that has the (4.7)e. most metallic character in Group 2A (2)

Verified step by step guidance

1. Identify the elements in Group 2A (2) of the periodic table. These are the alkaline earth metals.
2. List the elements in Group 2A: Beryllium (Be), Magnesium (Mg), Calcium (Ca), Strontium (Sr), Barium (Ba), and Radium (Ra).
3. Understand that metallic character increases as you move down a group in the periodic table.
4. Determine which element is at the bottom of Group 2A, as it will have the most metallic character.
5. Identify the symbol of the element with the most metallic character in Group 2A.

Key Concepts

Metallic Character

Metallic character refers to the tendency of an element to exhibit properties typical of metals, such as conductivity, malleability, and luster. In the periodic table, metallic character increases as you move down a group and decreases across a period from left to right. This concept is crucial for understanding the behavior of elements in Group 2A, where metallic properties are prominent.

Group 2A Elements

Group 2A, also known as the alkaline earth metals, includes elements like beryllium, magnesium, calcium, strontium, barium, and radium. These elements have two electrons in their outermost shell, which they readily lose to form cations with a +2 charge. Understanding the properties and trends of these elements is essential for identifying which has the most metallic character.

Periodic Trends

Periodic trends are patterns observed in the periodic table that describe how certain properties of elements change across periods and down groups. For metallic character, the trend shows that elements become more metallic as you move down a group due to increased atomic size and decreased ionization energy. Recognizing these trends helps in predicting the behavior of elements in various groups, including Group 2A.