Question

what are called bridge elements. give examples​

Answer 1

Answer:

Bridge elements are elements which show similarities in properties diagonally with the period of the next group. Bridge' the gap between the alkali and alkali earth metals (groups 1 & 2) on one side, and the metalloids/nonmetals (groups 13 - 18) on the other side.

Answer 2

Answer:

Elements of 2nd period are called bridge elements. This is because in some chemical properties they resembles with elements of third period which are diagonally present in third period. E.g. Mg shows similarity with alkaline earth metal (IIA) and Group IIB metals.