Chemistry · Periodicity in Elements

Electropositive elements are characterized by their ability to lose electrons easily, forming positive ions. Alkali metals, which include elements like lithium, sodium, and potassium, are highly electropositive as they have a single electron in their outermost shell that they readily lose. Alkaline earth metals, such as magnesium and calcium, also display electropositive behavior by losing two electrons to form positive ions. In contrast, halogens are highly electronegative, meaning they prefer to gain electrons and form negative ions. Therefore, the correct answer is both 'A' and 'B', as both groups contain electropositive elements.

Alkali metals are highly electropositive, meaning they easily lose electrons to form positive ions. This makes them electropositive elements.

Alkaline earth metals are also electropositive, though generally less so than alkali metals. They readily lose two electrons to form divalent positive ions.

Halogens are not electropositive. They are highly electronegative, meaning they tend to gain electrons to form negative ions. Fluorine, in particular, is the most electronegative element.

Both Alkali and Alkaline Earth Metals are electropositive elements. They both tend to lose electrons easily and form positive ions, characteristic of electropositive elements.