7  
100. 100. 100.       
Ar 7.3933470660       -2.6986483924        0.0000000000
Ar 7.8226765198       -0.7390907295        0.0000000000
Ar 7.1014969839       -1.6164766614        0.0000000000
Ar 8.2357184242       -1.7097824975        0.0000000000
Ar 6.7372520842       -0.5111536183        0.0000000000
Ar 6.3777119489       -2.4640437401        0.0000000000
Ar 5.9900631495       -1.3385375043        0.0000000000