Q$.$ No$\mathrm{.}1$: Find the point group of following substances.

a$)$ Dibenzene Chromium.

b$)1,5-$dichloronaphthalene

c$)$ Hydronium ion

d$)$ Ethane $($Eclipsed conformation$)$

e$)$ Sulphate ion.

f$)$ Diborane

Q$.$No$\mathrm{.}2$: Write short answer of following questions.

Reduce the following representation to irreducible representations

$\backslash$table$[[C_{3}V,E,2C_3,36V$