Can every group be extended to ring with idenity

Question

Can every abelian group converted into ring(by defining multiplication operation) with identity with same order. We can convert every group G into ring by defining a.b = 0 for all a and b in G. But this ring has no multiplicative identity

Answer 1

The classification of finitely generated abelian groups implies that the group is a direct sum of copies of $\mathbb{Z}$ and copies of $\mathbb{Z}/n\mathbb{Z}$ for certain natural numbers $n \gt 1$. Endowing these groups with the natural ring structure coordinate-wise gives a non-trivial ring structure.