The elements at the bottom of column 1 in a wide form periodic table react more violently with water than do the elements at the top of the column because it requires less energy to remove an electron from the outer shell of elements near the bottom of the table than from an element near the top of the table. The pre-quantum explanation of this difference is that the valence shell electrons in the larger elements at the bottom of the column are "shielded" from the attraction of the positive nucleus by the many inner shell electrons present in the larger elements.
All of them tend not to react with each other until you get lower down the group
Noble gases or group 18 elements
Group 17 elements, also known as the halogens, are the p block elements that react to form halides. They readily react with other elements to form salts called halides, such as sodium chloride (NaCl) and potassium iodide (KI).
Potassium is a metal, and it would react to group 17 (7A) because those elements are nonmetals.
The alkali metals in group 1 react by losing one electron.
elements are in the same group since they react similarly to other elements in that group.
All of them tend not to react with each other until you get lower down the group
Noble Gases
Group 18, the noble gases, are elements that hardly react with other elements. This is because they have their full complement of eight valence electrons.
Group-18 elements least react with other elements. They are inert in nature. They are called noble gases.Elements in group 18 are less likely to react with any other elements. This group is made out of the noble gases. Its members are He, Ne, Ar, Kr, Xe and Rn.
Noble gases or group 18 elements
Group 17 elements, also known as the halogens, are the p block elements that react to form halides. They readily react with other elements to form salts called halides, such as sodium chloride (NaCl) and potassium iodide (KI).
Potassium is a metal, and it would react to group 17 (7A) because those elements are nonmetals.
The alkali metals in group 1 react by losing one electron.
Potassium would strongly react with the elements in group 17 and group 16.
They are the noble gases. Group number is eight
Group 1 and group 2 elements are reactive metals and react readily with water. They also react readily at high temperatures with oxygen. Over the millenia any free deposits would react to form compounds.