Beta Decay of Strontium-90

90Sr → 90Y + e− + ν̄e

개요

Strontium-90 undergoes beta decay to yttrium-90 with a half-life of 28.8 years. Sr-90 is a major fission product and is biologically dangerous because it mimics calcium and concentrates in bones. Nuclear fallout from atmospheric testing deposited Sr-90 worldwide during the 1950s-60s.

참여 물질

역할 물질 계수 상태
반응물 Strontium Sr 1 (s)
생성물 Yttrium Y 1 (s)

일상 속 예시

Sr-90 was detected in children's milk teeth during the nuclear testing era, leading to the 1963 Nuclear Test Ban Treaty.

산업적 중요성

Sr-90은 방사성 동위원소 열전 발전기(RTG), 산업용 두께 측정 장비에 사용되며, 그 딸 핵종인 Y-90은 암 치료에 사용됩니다.

성질

유형
Nuclear
가역 반응
아니오
에너지
발열
ΔH
-55000000.0 kJ/mol

관련 반응

Alpha Decay of Radium-226 Alpha Decay of Radon-222 Alpha Decay of Thorium-232 Neutron Capture by Uranium-238 Beta Decay of Iodine-131 Alpha Decay of Polonium-210 Americium-241 Alpha Decay Beta Decay of Cobalt-60 Plutonium-239 Fission Electron Capture by Beryllium-7

Frequently Asked Questions

What is the equation for Beta Decay of Strontium-90?
The balanced equation is: ⁹⁰Sr → ⁹⁰Y + e⁻ + ν̄ₑ.
What type of reaction is Beta Decay of Strontium-90?
Beta Decay of Strontium-90 is a nuclear reaction.
Is Beta Decay of Strontium-90 exothermic or endothermic?
Beta Decay of Strontium-90 is exothermic (releases energy). The enthalpy change (ΔH) is -55000000.0 kJ/mol.