chem

Complete the following radioactive decay problem.

234 4
U ---> He+
92 2

how do i do this?

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1. It's like a math problem.

234 = 4 + ___

92 = 2 + ___

The top number = mass number = number of protons + number of neutrons

The bottom number = number of protons

Find the element that correspond to the top and bottom number.

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2. i need help

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