JERSEY CITY — Two Radio Shack stores in Jersey City and one in Union City are among the 50 stores that will close in New Jersey as a result of the company filing bankruptcy last week. Nationwide, the company is expected to sell as many as 2,400 stores. The Jersey City stores at 353 Central Ave, Jersey City and Newport Center Mall, Jersey City, and the Union City store on Bergenline Avenue are expected to close.