CHARGE=1 PM7 Argon potassium cation <Ar-K> GR=HF631G GWT=10 K 0.00000000 +0 0.0000000 +0 0.0000000 +0 0 0 0 Ar 3.57600000 +1 0.0000000 +0 0.0000000 +0 1 0 0