Question

which of the following best evaluates the chemical reactivity of the structure represented by the diagram below? o the chemical would be reactive because it has fewer than 8 valence electrons. o the chemical would be reactive because it has a small nucleus. o the chemical would be unreactive because it has fewer than 8 valence electrons. o the chemical would be unreactive because it has a small nucleus.

Explanation:

The reactivity of an element is determined by the number of valence electrons. Elements with a full outer - shell (8 valence electrons, except for helium which has 2) are unreactive (noble gases). If an element has fewer than 8 valence electrons, it will tend to react to achieve a stable electron configuration. The diagram shows an atom with 2 electrons in its outer shell, which is less than 8, so it will be reactive.

Answer:

The chemical would be reactive because it has fewer than 8 valence electrons.