Half life of Tc-99 is-
Correct Answer: 6 hours
Description: Ans. is 'a' i.e. 6 hours Ionizing radiation emitted by various radioisotopesRays Radioactive elementst 1/2 bP-32Phosphorous14.3 daysSrStrontium28 yearsY-90Yttrium2.54 daysGadolinium does not cross blood brain barrier (BBB) unless the barrier is disrupted b gRa-226Radium1622Au-198Gold2.7 days1-131Iodine (mainly Beta)8 daysgIr-192Iridium74.5 daysCo-60Cobalt5.2 yearsCs-137Cesium30 yearsXe-133Xenon5.2 days1-123Iodine13 hours1-132Iodine2.3 hoursTc-99Technitium6 hoursGa-70Gallium citrate3.2 daysTl-201Thallous chloride3.1 daysRn-222Radon3-6 dayCr-51Chromium K-81Krypton SeSelenium N, gCf-252Californium2.6 yearsTa-182Tantulum4 monthsNote - Radium also emits - a - particles - So, radium emits a, b & g rays. Radium also produces neutrons when mixed with beryllium.
Category:
Radiology
Get More
Subject Mock Tests
Practice with over 200,000 questions from various medical subjects and improve your knowledge.
Attempt a mock test nowMock Exam
Take an exam with 100 random questions selected from all subjects to test your knowledge.
Coming SoonGet More
Subject Mock Tests
Try practicing mock tests with over 200,000 questions from various medical subjects.
Attempt a mock test now