So, NCERT has this line(first line in the first picture).
All elements except oxygen form dichlorides and dibromides.
Now, my doubt is, upon looking in jd lee for dihalides of Se, I found out that JD Lee has no mention of it. (Attached the table, in 2nd pic)
So, what should be the final statement?
The exception would only be Oxygen or do we include Se also, though there’s no mention of it in NCERT and no specific article about it in JD LEE?