On donne la formule de Lewis d'une molécule :
{"init": {"range": [[0.6843453358788485, 5.0476546641211515], [-1.8156641395603828, 1.8156641395603828]], "scale": [50, 50]}, "line": [[[3.4222, 0.4366], [3.0758, 0.2366], {"subtype": "segment"}], [[3.5221999999999998, 0.26339999999999997], [3.1757999999999997, 0.06339999999999998], {"subtype": "segment"}], [[2.3098, -0.4366], [2.6562, -0.2366], {"subtype": "segment"}], [[2.2098, -0.26339999999999997], [2.5562, -0.06339999999999998], {"subtype": "segment"}], [[3.995941607048685, 0.3258310358629935], [4.0476546641211515, 0.5190297929196055], {"subtype": "segment"}], [[3.9063009131639124, 0.7638544895775443], [3.713128036784603, 0.8156641395603826], {"subtype": "segment"}], [[1.7360583929513156, -0.3258310358629935], [1.6843453358788485, -0.5190297929196055], {"subtype": "segment"}], [[1.825699086836088, -0.7638544895775443], [2.018871963215397, -0.8156641395603826], {"subtype": "segment"}]], "label": [[[3.732, 0.5], "O", "center", {}], [[2.0, -0.5], "O", "center", {}], [[2.866, 0.0], "C", "center", {}]]}
Combien la molécule contient-elle de doublets liants ?