Periodic trends are patterns in the periodic table that help predict certain properties of elements. They include atomic radius, ionization energy, and metallic character, which change based on the element's position in the table.
Periodic trends refer to specific patterns presented in the periodic table that reflect different aspects of a certain element, including its size and electronic properties. They are instrumental to chemists as they provide a tool for quickly predicting an element's properties. These trends occur because of the similar atomic structure of the elements within their respective group families or periods, and due to the periodic nature of the elements.
Majorperiodic trendsconsist of atomic radius, ionization energy, and metallic character. As an example, ionization energy and electronegativity typically intensify from left to right in a row and from the base to the top in a column. In contrast, the atomic size and the metallic character increase from right to left in a row and from the top to the bottom in a column. The periodic table's structure allows us to qualitatively evaluate how these properties of the elements change based on their position on the table.
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b. balance in number of protons and neutrons
c. balance in number of electrons and protons
d. the balance of electrons in each electron shell
Answer:
C.) balance in number of electrons and protons.
Explanation:
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B. the amount of matter in a substance
C. twice the amount of mass of a substance
D. the amount of space a substance takes up
The answer is D.
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