There are two possible Lewis structures for Pt(NH3)2Cl2:
Platinum (EN = 2.28) is less electronegative than nitrogen (EN = 3.04) and chlorine (EN = 3.16) so the dipole moments point away from Pt.
There are two compounds of the formula Pt(NH3 )2 Cl2 as shown below. The compound on the right is called cisplatin, and the compound on the left is called transplatin.
Which compound has a nonzero dipole moment?
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