Need asap with this chemistry if someone could me

1.) put these in order of increasing bond length.

c≡c c—c c=c
put these in order of of increasing bond order. is there a connection between bond order and bond length?

2.) what is the bond order of each of the following bonds?

c=n c≡n c—n
put them in order of increasing bond dissociation energy (bde).
is there a connection between bond order and bde?

3.) using only the periodic table, select the most electronegative atom in each of the following sets:

as, se, br, i
al, b, c, si
ge, as, p, sn
li, rb, be, sr

4.) arrange the bonds in each of the following sets in order of increasing polarity:

c-f, o-f, be-f
be-cl, br-cl, c-cl
c-cl, c-o, c-h

5.) draw a lewis structure for

sih4
brf3
h2co
use all 5 steps in the process for drawing lewis structure