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Problem 34 Easy Difficulty

In the decay $^{234}_{90} \mathrm{Th} \rightarrow_{Z}^{A} \mathrm{Ra}+_{2}^{4} \mathrm{He}$ identify (a) the mass number (by balancing mass numbers) and (b) the atomic number (by balancing atomic numbers) of the Ra nucleus.

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Top Physics 103 Educators
Farnaz M.

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Zachary M.

Hope College

Jared E.

University of Winnipeg

Meghan M.

McMaster University

Video Transcript

in number 34 were just asked to find the numbers here for this radium. In this balanced equation, I'm secure. Start with biggest story, um, to 34. And it's ejecting this alfa particle here. Um, so that's four nuclear owns. So this must have 2 30 cause this balances to 30 plus four more. Gives me the 2 34 Same thing on the bottom here for the number of protons. If it says 90 in this has to this must have 88.

University of Virginia
Top Physics 103 Educators
Farnaz M.

Other Schools

Zachary M.

Hope College

Jared E.

University of Winnipeg

Meghan M.

McMaster University