Want this question answered?
Because of the disaster at the nuclear power plant in Chernobyl, not many people live there. Chernobyl, Ukraine has a population of 500.
Ukraine. At the time of the disaster, it was in the Soviet Union.
Ukraine and Belarus
You probably mean at Chernobyl in the Ukraine, in 1986
the nuclear meltdown at Chernobyl.
The Ukraine
Chernobyl, Ukraine, in 1986, is probably what you are thinking of.
The world's worst known nuclear disaster was at Chernobyl, in the Ukraine. The Chernobyl Disaster, as it is called, happened on April 26, 1986. There is a link to a Wikipedia article on this below.
Chernobyl, Ukraine, 1986
Ukraine
The country that was affected most is Belarus, because it is the smallest country and 1 part of 3 is dead. Then goes Ukraine because it is bigger and it least effected. And then goes Russia because it is giant and affected least. Good luck!
There was no famous disaster (or anything else) at Chernobyl in Russia as there is no such place. However for the disaster that occurred in Chernobyl in the Ukraine, please see the related question.