years I can answer this question
They are called isotopes. One example is Carbon-14, which has 2 extra neutrons.
Answer: I think it is 153m
Explanation:
<em>if u mix them ammonia will react with H2o2 to give N2 </em>
<em>since N2 is highly stable a lot of energy will be released in the reaction. </em>
<em>Hence the reaction will be explosive </em>