^76 As rightarrow _________ _____ +^76 Se + ________ Type of process: _________
ID: 1616160 • Letter: #
Question
^76 As rightarrow _________ _____ +^76 Se + ________ Type of process: _________ Parent nucleus is^232 Th and emits an alpha particle. The daughter nucleus beta^- decays and next daughter alpha decays leaving a residual radioactive nucleus. This is not end of chain but you stop here. Write the decay equations for each of these decays including any other particle that may come out in a decay. The visibility got affected during the storm on Sunday morning (April 30). The weather station at the Rock airport reported visibility as 1527.8 yards, 1 yard = 3 ft (Exact), 1 mile = 1760 yards (Exact) (i) As a student of science, you want to report this number at best as a 2 significant figure in yards. Visibility: 1527.8 yards = _________ (ii) Also you want to convert it into miles (also report as 2 significant figure). Visibility: 1527.8 yards = ___________Explanation / Answer
b) 232Th 90 ---> 228 Th 88 ---> 228 Th 89 ---> 224 Th 87
c) 1. 1500 yards.
2. 0.86806 miles= 0.87 miles
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