Is turning something anhydrous endo or exothermic?

Iwill give extra points to who gets this right

Each of the following compounds contains a metal that can exhibit more than one ionic charge. provide systematic names for each of these compounds. (a) cr(clo3)6 (b) mo(cn)6 (c) cr2(so3)3 (d) v(clo2)2 (e) v(cn)5 (f) os(clo2)4

If two atoms are bonded to a central atom with no lone pairs,how will they be arranged