Question

The first stable isotope which was transmuted by artificial means was:

• A. ${}_8^{16}O$
• B. ${}_7^{14}N$
• C. ${}_6^{12}C$
• D. ${}_4^{9}Be$

Answer 1

The correct option is B ${}_7^{14}N$

In 1919, Rutherford was able to accomplish transmutation of nitrogen into oxygen, using alpha particles directed at nitrogen.

${}^{14}N+\alpha {\to }^{16}O+p$