boron family
Elements in a given group have the same number of valence electrons and hence they have similar properties.
union means to group the given sets. where as intersection means to pick out the common elements from the given sets. if set a has 1,2,3 elements and B has 1,2,3,4,5. then its union will have 1,2,3,4,5 as its elements. and its intersection will have 1,2,3 as its elements.
The general name given to the elements of Group IA (1) is alkali metals.
The name given to group 7 elements in the Periodic Table are halogens.
Copper, gold, and silver are the choices that represent a group of elements with common characteristics. All of these elements are metals.
Halogens
These elements are called halogens.
group 7 - halogens group 8 - noble gases
=NOBLE GASES=
Noble gases.
Noble Gases..!
In space, the most common elements are?