Some of the chemicals released were Iodine, Molybdenum, Strontium and Plutonium. The break down period for iodine and molybdenum is 3 days. These 3 days had an immense effect in Spreading toxin. The next substances was strontium which a break down time of 29 days. The most damaging element is plutonium, which has half life of 24,000 years, and is the most carcinogenic. After the disaster, many people developed cancer especially children. This number goes up every year. Many people live today in contaminated areas. Chernobyl was 70 times more intense than in Hiroshima or Nagasaki. One of the most common illnesses is thyroid cancer. The World Health Organization WHO estimates that cancer in Ukraine is 6 times more prevalent than before the disaster. b) Belarus and other states

Belarus received 70 % of the radiation from the Chernobyl disaster. Belarus is divided into 7 regions. The most contaminated region is Gomel next to Chernobyl. Every citizen of Belarus was radiated. The contamination spread over 6000 miles of farm land, 20% of the forests, and over 109,000 people. From the National Budget, Belarus allocates 9% for decontamination. In 2002, 574 children developed cancer.
After the explosion, radiation wafted above Scandinavia, Poland, Austria, and Czechoslovakia. In these countries the cancer rate has increased.

Damage value for Belarus Republic between 1986 –2015

Decontamination - 191.7 milliard USD
Obsolescence - 29.6 milliard USD

Cs- Cesium
St- Strontium
Mo- Molybdenum
I – Iodine
Pu - Plutonium

10. Radiation effects on human health

a) What is it radiation?

Radiation is a natural effect. When atoms change their structure and detach, radation is released. This radiation comes from stones, the ground, water, and much more. This is natural radiation and the main substance in it is the gas Radon.
Artificial radiation, made by human activity, is created from nuclear tests, and is in garbage from nuclear electric plants. The most dangerous element of this radiation is plutonium, which is not a substance found in nature.

b) The Effects of radiation on the human body

The human body is comprised of many cells which a fill different purposes.
Radiation destroys the molecules from which the cell is built. If a is cell damaged they are either altered or die.
Radiation affects cells in 3 ways:

1. The cell is healthy and lives.

2. This cell dies or is damaged.
If radiation kills many cells, a person gets sick.