symmetry

i think only first walla has plane of symmetry.
none of them has centre of symmetry.
correct me if i m wrong.

yeah, I_st one is symmetrical in 3d plane by wedges in same direction corresponding same elements.

i agree as well!

Quite easy to see that if you insert a plane between the two carbons..
Indeed it should be 1st.

This way

But let one of the white balls be 2 the other side

hope u can imagine ????

I dont get where is my mistake

Wouldn't what you're saying apply for a point of symmetry?..

" " Wouldn't what you're saying apply for a point of symmetry?.. " "

Y a i there is a point of symmetry

In the qs its asked centre or plane or line of symmetry no ??

@Pritish :

Got my mistake anyways thanks for helping out

& thanks Varkha too

hmm ya uttara but because of the orientation of Br and H groups there is no centre of symmetry...
good that you understood before me saying anything :)