[单选题]
In radioactive dating, carbon/6 jzd0a2 3io )fz,*zvjeif hl-14 is o kl; es5o8weqkrz:yikw7 9j(0ften used. This nucleus emits a single beta particle j8(5ke;9r:o0k w7lz yswi ke qwhen it decays. When this happens, the resulting nucleus is
A. still carbon-14.
B. boron-14.
C. nitrogen-14.
D. carbon-15.
E. carbon-13.
Post time 2024-1-22 01:01:29