Brainlies ! me : )
the below reaction can be categorized as more than one type of reaction. which reactions are these, and what are the types of reactions?

Double decomposition and precipitation

Explanation

BaCl2(aq) + Na2SO4(aq) → 2 NaCl(aq) + BaSO4(s)

This is a double decomposition reaction, in which the metal cations change partners.

For example, Ba pairs up with SO4, and Na pairs with Cl.

This is also a precipitation reaction, because BaSO4 is insoluble and forms a white precipitate.

Some of the many types of reaction are

just did the assignment and the answer was #1 +2 n

a electronegativity decreases beacuse the size of nucleus is bigger.