1. If an element as 7 electrons in its outmost shell would that be reactive or stable ?explain your answer. 2. If an element has 1 electron in its outer shell what does that element want to do with that electron?explain for credit.

Many radioactive atoms that have large masses undergo radioactive decay by releasing a particle that is identical to a helium-4 nucleus. what changes in the original atom are expected as a result of this natural phenomenon? the atomic number and the mass number will decrease. the atomic number and the mass number will increase. the atomic number will increase, and the mass number will decrease. the atomic number will decrease, and the mass number will increase.