When the neutrons produced in the fission of u-236 bombard u-235 to generate more u-236 and perpetuate fission, this is called a:

select the correct answer below:

decay series

chain reaction

sequential fission

none of the above

chain reaction

Explanation:

The description is termed a chain reaction.

During nuclear fission, a heavy radioactive isotope disintegrates rapidly into two lighter nuclei and several neutrons with the release of large amount of energy.

Each of the neutrons produced can now react with the new radionuclide to produce another new set of nuclide thereby releasing energy and several neutrons. This is called a chain reaction.

For the nuclide described above, we can express as:

                   ²³⁶₉₂U  → fission fragments(²³⁵₉₂U) + neutrons + energy

           fission with the neutrons:

                      ²³⁵₉₂U → ²³⁶₉₂U

explanation:

metals have excess of electrons whereas non-metals have deficiency of electrons. thus, in order to gain stability metals easily donate their electrons to the non-metals.

for example, electronic configuration of sodium is and electronic configuration of phosphorous is .

when a phosphorous atom and sodium atom combine together then sodium will donate is extra one electron to the phosphorous atom. as a result there will be formation of ionic bond between sodium and phosphorous.

the reaction will be as follows.

there, are three sodium sodium atoms and each of them will donate its one extra electron to phosphorous atom. thus, the sub-shell of phosphorous gets completely filled.  

thus, we can conclude that electrons are transferred from atoms of sodium to atoms of phosphorous. this transfer makes the sodium atoms donate one electron and the phosphorous atoms to gain one electron. as a result, the sodium and phosphorus atoms strongly attract each other.