Ionisation Energy

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This resource, from the Royal Society of Chemistry, covers ionisation energy, structure of the atom, intra-atomic forces. Students are provided with a diagram of the electronic structure of an atom and twenty statements which refer to it. They have to decide whether it each statement is correct or not.

The activity is designed to elicit common alternative conceptions about the nature of the interactions between an atomic nucleus and electrons. These incorrect ideas tend to be used by students when explaining patterns in ionisation energy. In particular, students commonly consider the nucleus as giving rise to a set amount of force to be shared among electrons (the conservation of force conception). They may also consider that any species with an octet of electrons in the outer shell must be stable

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