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Father looking happy with arm on his son shoulder while his son doing a homework at table. Elementary Schoolboy, Kids education, Family bounding.
A hydrogen bond (or H-bond) is a primarily electrostatic force of attraction between a hydrogen (H) atom which is covalently bound to a more electronegative atom or group
Caucasian grandparents share joyful and playful moments with two grandchildren on a comfortable sofa in a well-lit, inviting living space, surrounded by greenery and warm tones.
Happy parents and child making family portrait while sitting on floor in living room together. Smiling mother and father hugging their joyful son placing between them, looking at camera. Family bonds.
The solid line denotes a polar covalent bond, and the dotted or dashed line indicates the hydrogen bond.

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