That didn't happen.
Yes, Voldemort gives people one hour to mourn their losses and Harry notes that all the Weasley's are crying over Fred.
During the one hour break Lord Voldemort called, his body was moved to the Great Hall where his family mourned him. It is unknown what happened to his body after the battle but it was probably buried by his family.
Snape,Fred Weasley,Voldemort,Harry,Nagini,Dumbledore
Fred Weasley, his father Arthur Weasley was supposed to die by J.K Rowling decided against it and changed it to Fred.
Fred Weasley, Remus Lupin, Tonks, Voldemort, Bellatrix, and more
Fred was killed when a spell hit a wall and it collapsed.
Fred and Roxanne Weasley.
Percy Weasley ran after the Augustus Rookwood who is thought to have caused the explosion, however it isn't known what happened after that.
Fred Weasley. He dies when a wall falls in on him when trying to help Harry and Ron fight some Death Eaters.
George Weasley continued to run the shop with the help of his brother Ron Weasley. It became very successful, especially among Hogwarts students.
George Weasley married Angelina Johnson. Fred Weasley died when he was twenty.
Severus Snape, Voldemort, Bellatrix Lestrange, Lupin, Tonks, Fred Weasley and lot of students.