Consider the nuclear equation below. 222/66Rn-->218/? Po+4/2He Which is the missing value that will balance the equation? 84 86 88 90

Question

Chemistry

Clinton Arias

2 January, 12:21

Consider the nuclear equation below. 222/66Rn-->218/? Po+4/2He Which is the missing value that will balance the equation? 84 86 88 90

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Answers (2)

Know the Answer?

Dayana Goodman · Answer 1

A) 84

Explanation:

I just did the review.

Bender · Answer 2

84

Explanation: The nuclear equation shows the decay of Radon-222 by emitting an alpha particle to form polonium-218. When a radioactive isotope undergoes alpha-decay, the mass number is decreased by 4 while the atomic number decreases by 2. Therefore, the complete nuclear equation is;

²²²₈₆Rn → ²¹⁸₈₄Po + ⁴₂He

The atomic number of Radon-222 decreases from 86 to 84 while the mass number decreases from 222 to 218, forming polonium-218.