Question

give reason ""stability "...the reason 2Na(I)+H2(g)=2NAH(s) Is a redox reaction

Answer 1

The reaction indicates the formation of sodium hydride. Hydrides are class of compounds in which oxidation state of hydrogen is -1. If we write oxidation no. of each species we get :

reactionNa(s)H2(g)NaHoxidation state00Na(+1),  H(-1)

all the atoms in their elemental state have 0 oxidation no.Na is converting from 0 to +1 means oxidized and H is converting from 0 to -1 is reduced.

Hence ,it is a redix reaction.