An excess of ba(no3)2 reacts with 250ml of h2so4 solution to give 0.55g of baso4.determine the concentration in moles per litre of the ba(no3)2 solution?

radioactive decay occurs in unstable atomic nuclei – that is, ones that don't have enough binding energy to hold

the nucleus together due to an excess of either protons or neutrons.

the correct option is c.

isotopes refers to different forms of the same element with the same atomic number but different mass number as a result of difference in their neutron numbers. isotopes have different relative atomic mass but share the same chemical properties.