Question

The nucleus of some isotopes will spontaneously undergo nuclear decay. These isotopes are said to be radioactive. what causes the nucleus of an isotope to be radioactive? Question 17 options: A. the net charge of the atom B. the attraction of protons to electrons C. an unstable ratio of protons and neutrons exposure to toxic chemicals D. too many electrons in its orbitals

Answer 1

If a atom is raidoactive or unbalanced, Instability of a atom's nucleus may result form excess of either neutrons orprotons. Which means the answer is letter C

Answer 2

Answer:The correct answer is option C.

Step-by-step explanation:

Nuclear decay is shown by those nucleus in which there is an imbalance between the number of neutrons and protons.

• If the ratio of neutrons to proton is 3:2 than it is a stable nucleus.

• If the ratio of neutrons to protons is not 3:2 than the nucleus will said to be unstable nucleus and it will undergo nuclear decay in order to gain stability.

Hence, the correct answer is option C.