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A watch's luminous glow is due to zinc sulfide paint that is energized by beta particles given off by tritium, the radioactive hydrogen isotope

A watchs luminous glow is due to zinc sulfide paint that is energized by beta particles given off by tritium, the radioactiv

A watch's luminous glow is due to zinc sulfide paint that is energized by beta particles given off by tritium, the radioactive hydrogen isotope H, which has a half-life of 12.3 years. This glow has about 1/25 of its initial brightness. Part A How many years old is the watch? O 28 yr O 42 yr O 57 yr O 67 yr Submit Request Answer

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