Question
describe two patterns found in a periodic tables
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1. The first pattern found in a periodic table is the periodic law. This states that the properties of elements in the periodic table repeat in a predictable way based on their atomic structure. The elements are arranged in rows (periods) and columns (groups) according to their increasing atomic number. As you move from left to right across a period, the elements become less metallic and more non-metallic. As you move down a group, the elements become more metallic.
2. The second pattern found in a periodic table is the trend in electronegativity. Electronegativity refers to an element's ability to attract electrons towards itself. As you move across a period, electronegativity increases because the number of protons in the nucleus increases, making the attraction between the nucleus and electrons stronger. As you move down a group, electronegativity generally decreases because the atomic radius increases, which means the outermost electrons are further away from the nucleus and are therefore less attracted to it.
2. The second pattern found in a periodic table is the trend in electronegativity. Electronegativity refers to an element's ability to attract electrons towards itself. As you move across a period, electronegativity increases because the number of protons in the nucleus increases, making the attraction between the nucleus and electrons stronger. As you move down a group, electronegativity generally decreases because the atomic radius increases, which means the outermost electrons are further away from the nucleus and are therefore less attracted to it.