[单选题]
An element X is bombarded with;neuqnhs:we(i1 *is 3tiv-e( alpha particleswnmpp7g 7-;q1shv ov0t y,v, rs va56lfq6x/q and a new element Y is formed with a neutron emitted. The following equation can be written for the nuclear reaq;x6p/nfpl 5ht0mqgys7 vvv s6-waq,17,vorction.
The atomic numbers of X and Y are A and B respectively. Which of the following is correct for A and B?
A. A−1=B
B. A+1=B
C. A−2=B
D. A+2=B
参考答案: D
本题详细解析:
Explanation:
The number of protons on both sides of the equation must be the same.
