because they almost always give away a valance electron during bonding
Elements from the group 2 of the periodic table form cations.
Metals can become positively charged when they lose electrons to other elements or compounds. This loss of electrons creates an imbalance of positive charges, resulting in a positive charge on the metal.
Alkali Metals are group One elements and have one electron in their outer electron shell. In order to become stable they tend to lose an electron by reacting with something that needs an electron to become stable such as a group seven halogen. The Alkali Metal then become positive ions.This is because they only have on valance electron. This makes it easier to react with other elements and more often also.
All of them tend not to react with each other until you get lower down the group
Other elements in the same group as tin (Sn) in the periodic table are lead (Pb) and germanium (Ge). These elements belong to Group 14, also known as the carbon group, and share similar chemical properties.
Elements from the group 2 of the periodic table form cations.
Metals can become positively charged when they lose electrons to other elements or compounds. This loss of electrons creates an imbalance of positive charges, resulting in a positive charge on the metal.
elements are in the same group since they react similarly to other elements in that group.
The group 18 elements are considered inert because they rarely if ever interact with other elements. This is due to the fact that their outermost energy levels are full, which means they don't need to bond with other atoms to become stable.
Hydrogen is separate from the rest of Group 1A elements because it displays unique properties that do not fit the typical characteristics of alkali metals (Group 1A elements). For example, hydrogen can form both positive and negative ions, while other Group 1A elements typically form only positive ions. Additionally, hydrogen can exhibit nonmetallic properties in addition to metal-like behavior, setting it apart from the rest of Group 1A.
Astatine wouldn't form salt as readily as other elements in Group 17. Astatine is a radioactive metalloid. Other elements in Group 17 are nonmetals.
Noble Gases
Because group 1 has 1 electron in it's outer most shell and the have to fill the energy level, so they gave there electron and form positive ion (cation). And group 17 has 7 electrons in it's outer most shell and they need to complete their shell so the gain electron and form negative ion (anion).
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.
Because group 1 has 1 electron in it's outer most shell and the have to fill the energy level, so they gave there electron and form positive ion (cation). And group 17 has 7 electrons in it's outer most shell and they need to complete their shell so the gain electron and form negative ion (anion).
base in my experience.... because of the gravity of the earth...
Potassium does not react at all with some elements such as helium, but when it reacts, it always forms a positive ion.