A radioactive element...A...has an unstable nucleus that will become stable if the element reacts with another element to form a compound.B...has an unstable nucleus that will become stable if more electrons are lost.C...has an unstable nucleus that will become stable if more electrons are added.D...has an unstable nucleus that will decay to produce a different element.

What makes a nucleus stable?A.A nucleus is stable if the electrostatic and strong nuclear forces balance out.B.A nucleus is stable if there are fewer neutrons than protons in the nucleus.C.A nucleus is stable if there is the same number of protons as electrons.D.A nucleus is stable if all of the electrons are in the lowest energy levels.

What happens during radioactive decay?A.An unstable nucleus loses particles until it becomes stable.B.An unstable nucleus absorbs radiation to make it stable.C.An unstable nucleus gains mass until it becomes stable.D.An unstable nucleus gains neutrons to make it stable.

Identify two reasons an atom might undergo radioactive decay.It doesn't have enough energy to be stableIt has too much energy in its nucleusIt has too many electrons

A nucleus of a radioactive element emits an -particle, then a – particle and then another– particle.Which statement describes the final element that is produced?A It is a different element of higher proton number than the original element.B It is a different element of lower nucleon number than the original element.C It is an isotope of the original element.D It is the same element as the original element but with a different proton number.

What characterizes a radioactive atom?A.Its nucleus is unstable.B.Its electrons gain energy.C.Its protons repel the neutrons.D.Its nucleus has too few quarks.SUBMITarrow_backPREVIOUS