In a group,the ionization energy decreases because the atomic size increases(no. of shells increases, therefore due to this, there's a weak attractive force between nucleus and the valence electrons)
The answer is D because Search Results
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Valence Shell Electron Pair Repulsion (VSEPR) theory Electron pairs around a central atom arrange themselves so that they can be as far apart as possible from each other. ... The repulsion between negatively charged electron pairs in bonds or as lone pairs causes them to spread apart as much as possible.
Models are related to theories and hypothesis because the model itself is a representation of what the theories and hypothesis could, would , or should look like.
Answer:
Ca, Mg, Zn, Cu
Explanation:
Refer to the Reactivity Series where each metal is more reactive than others.
