Why is fusion nuclear energy currently not widely used as a source of electricity?

fusion reactions have not yet been achieved.

fusion reactions cannot be controlled.

fusion reactions require very high temperatures and pressure.

fusion reaction energy cannot be converted into electricity.

Fusion reactions require very high temperatures and pressure.

Explanation:

Fusion reactions are nuclear reactions where two small nuclei combine or fuse together to give a larger nuclei or different nuclei with some more sub atomic particles.

The source of energy in sun is fusion reaction between hydrogen to give helium nucleus.

For fusion of two nuclei , a particular energy barrier is to be overcome by the nuclei to come closer.

For this a large amount of initial energy (which is attained by high temperature and high pressure) is required. Hence this makes the candidature of nuclear fusion less favorable as compared to fission.

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.

i'm wiling to try and you : )