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Which of the following isotopes is most dangerous to homo sapiens? phosphorous-32 strontium-90 caesium-137 iodine-131
The radioactive strontium – 90 is most dangerous as it gets fixed in bones.and may remain in bones leading to bone cancer. It emits high energy beta radiations. Phosphorus – 32 also emit high energy beta radiations but they cannot penetrate human skin. Caesium – 137 (beta emitter) and iodine – 131 also pose danger to human health but not more than strontium 90.
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