Moving from the element with atomic number 10 to atomic number 11 on the periodic table, there is a change in reactivity. In three to five sentences, identify the direction of the change, and give two reasons for the change.
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The question is asking about the change in reactivity when moving from the element with atomic number 10 (neon) to atomic number 11 (sodium) on the periodic table. Reactivity refers to how readily an element can undergo a chemical reaction. In this case, the change in reactivity is an increase in reactivity. Two reasons for this change are:
1. Atomic Structure: Sodium has one more electron in its outermost energy level compared to neon. This extra electron makes the outermost electron shell less stable in sodium, allowing it to easily lose this electron and become more reactive.
2. Electronegativity: Neon is a noble gas and has a full outer electron shell, making it stable and less likely to react with other elements. Sodium, on the other hand, has a lower electronegativity and a strong tendency to lose its outermost electron, which results in increased reactivity.