Let R be a commutative ring with identity and Nil(R) be the set of nilpotent elements of R. The nil-graph of ideals of R is defined as the graph AG_N(R) whose vertex set is {I:(0)and there exists a non-trivial ideal 

 such that 

 and two distinct vertices 

 and 

 are adjacent if and only if 

. Here, we study conditions under which 

 is complete or bipartite. Also, the independence number of 

 is determined, where 

 is a reduced ring. Finally, we classify Artinian rings whose nil-graphs of ideals have genus at most one.
                    
 
                    
                    
                    Type of Study:  
Original Manuscript |
                    Subject: 
                    
alg  Received: 2020/03/24 | Revised: 2023/06/17 | Accepted: 2020/12/22 | Published: 2022/12/31 | ePublished: 2022/12/31