The hybridization would be sp2. it goes from s, sp, sp2, sp3, sp3d, and so on. each bond gets one more level. since there are three bonds connecting to nitrogen it would be sp2.
The answer will be (4) HI because the greater the difference of the bonds in electronegativity, the more polar a bond is.
I don’t know “which substance” are you talking about??
You can put the picture there so we can see.
Try putting this in biology category not chemistry so more ppl can help :)
