In discussing halogen reactivity (as covered in Core Idea), it is a common practice to argue that as you go down the Group 17 elements it becomes harder for the elements to gain an electron to form a ...

The periodic table The periodic table is a chart of all ... all react vigorously with water to produce an alkaline solution. Group 7 halogens The Group 7 elements are also known as the halogens.

When the alkali metals react with the different halogens (Group 7 of the periodic table), the group of compounds formed are known as the alkali metals halides. Due to the fact that there are a ...

Here is a list of the 118 elements along with their symbols and atomic numbers: These elements are organized in the periodic table based on their atomic numbers, which increase sequentially from 1 ...