explain the formation of hydrogen molecules
Answers
a hydrogen bond is formed when a charged part of a molecule having polar covalent bonds forms an electrostatic (charge, as in positive attracted to negative) interaction with a substance of opposite charge. Molecules that have nonpolar covalent bonds donot form hydrogen bonds. Strenght
Hi friend this is your answer
When hydrogen atoms combine to form molecules of hydrogen, 433 KJ/mol energy is released.
Whenever atoms combine to form a molecule ,there is always decrease in the energy. Actually, when two H atoms are far separated, they do not have any force of interaction (attractive or repulsive). As they tend to come closer, two different forces operates:
(a) The nucleus of one H is attracted towards the electrons of the other H atoms & Vice versa. The energy is released in attraction.
(b) The nuclei of the atoms as well as their electrons repel each other. Energy is needed to overcome the force of repulsion.