a) why should hydrogen be placed in group 1?
b) what are alkali metals and alkaline earth metals?
a) why should hydrogen be placed in group 1?
b) what are alkali metals and alkaline earth metals?
A-1) The position of hydrogen in the modern periodic table is still a topic of debate. Some people place hydrogen along with alkali metal in group I, while others place hydrogen separately at the top of the table. This is because its configuration resembles the configuration of two different groups - group 1 and group 17. Hydrogen has a single electron in its valence shell. Thus it can lose an electron to achieve a stable configuration like alkali metals and hence can be placed in group 1 (alkali metals). However, it can also gain an electron to achieve a noble gas arrangement and hence can be placed along with group 17 (halogen family) elements. However, it is generally placed along group 1 elements, as it readily forms H+ ions by losing one electron.
A-2) Alkali metals are the elements which belong to group 1 of the periodic table while alkaline earth metals are the metals which belong to group 2 of the periodic table. These elements are highly electropositive and form oxides which are basic in nature.
A-1) The position of hydrogen in the modern periodic table is still a topic of debate. Some people place hydrogen along with alkali metal in group I, while others place hydrogen separately at the top of the table. This is because its configuration resembles the configuration of two different groups - group 1 and group 17. Hydrogen has a single electron in its valence shell. Thus it can lose an electron to achieve a stable configuration like alkali metals and hence can be placed in group 1 (alkali metals). However, it can also gain an electron to achieve a noble gas arrangement and hence can be placed along with group 17 (halogen family) elements. However, it is generally placed along group 1 elements, as it readily forms H+ ions by losing one electron.
A-2) Alkali metals are the elements which belong to group 1 of the periodic table while alkaline earth metals are the metals which belong to group 2 of the periodic table. These elements are highly electropositive and form oxides which are basic in nature.
