Explain how reactions of elements relate to electron arrangement and atomic number.

In the subtopic Metals and non-metals, this learning objective focuses on explain how reactions of elements relate to electron arrangement and atomic number. It sits within The periodic table for AQA GCSE Chemistry 8462, so the explanation must keep the chemistry linked to Metals and non-metals rather than drifting into a nearby idea. Approved keywords to use include electron arrangement. atomic number means the number of protons in the nucleus of an atom, which determines the element's identity and position in the periodic table Avoid the mistake of students often confuse the number of outer electrons with the atomic number when explaining how reactions of elements relate to electron arrangement; instead, emphasize that the atomic number indicates the number of protons and thus the total number of electrons in a neutral atom, while the outer electron count specifically determines the element's reactivity For exam answers, when studying reactions of elements, always relate them back to their electron arrangement and atomic number