Question #199516

Identify the element X in the following nuclear reactions.

(I) N^15 +H^1 ⟶ He^4 +X

(ii) H^1+Be^9 ⟶ X + n

(III) C^13 + H^1⟶ X

Expert's answer

**Solution:**

(I) The unknown element X must have a mass number of *A* = (15 + 1 - 4) = 12 and an atomic number of *Z* = (7 + 1 - 2) = 6. The element with *Z* = 6 is **carbon (C)**, so the balanced nuclear equation is as follows:

**Answer (I): C^12**

(II) The unknown element X must have a mass number of *A* = (1 + 9 - 1) = 9 and an atomic number of *Z* = (1 + 4 - 0) = 5. The element with *Z* = 5 is **boron (B)**, so the balanced nuclear equation is as follows:

**Answer (II): B^9**

(III) The unknown element X must have a mass number of *A* = (13 + 1) = 14 and an atomic number of *Z* = (6 + 1) = 7. The element with *Z* = 7 is **nitrogen (N)**, so the balanced nuclear equation is as follows:

**Answer (III): N^14**

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