Concepts Of Physics MCQ Edition [Volume 2]PhysicsThe Nucleus

Determine the missing product to complete the given decay scheme: ²²⁶₈₈ Ra + ,?

Options

A²³⁰₉₀ Th
B²²²₈₇ Fr
C²²²₈₆ Rn
D²²⁴₈₆ Rn

Correct answer

C. ²²²₈₆ Rn

Step-by-step solution

The given decay process is an alpha decay, which can be represented as: ²²⁶₈₈ Ra ⁴₂ He + ^ A _ Z X Applying the law of conservation of mass number: 226 = 4 + A A = 222 Applying the law of conservation of atomic number: 88 = 2 + Z Z = 86 The element with atomic number 86 is Radon ( Rn ). Thus, the missing product is ²²²₈₆ Rn .

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