The iupac name for nf3 should have which of the following? the prefix “tri” before nitrogen the roman numeral (iii) after nitrogen the roman numeral (iii) after fluoride the prefix “tri” before fluoride

The IUPAC name of NF₃, is nitrogen trifluoride.

So here the answer will be 'the prefix “tri” before fluoride' should be used while doing IUPAC as there are three fluorine atoms and one nitrogen atom so the prefix tri must be used before it while only one atom of nitrogen is present , so it will be nitrogen trifluoride.

So , here the answer is 'the prefix “tri” before fluoride' should be used.

D

Explanation:

answer: the rate of diffusion increases with increase in temperature.

increase in temperature, increases the molecular/particles speed (kinetic energy. diffusion means movement of particles through the material.

generally, the heavier the particle the more it interacts with the environment and more the temperature matters. so higher temperature results in higher diffusion.

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.