what is the difference between a family of elements and elements in the same period?
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The vertical columns on the periodic table are called groups or families because of their similar chemical behavior. All the members of a family of elements have the same number of valence electrons and similar chemical properties. The horizontal rows on the periodic table are called periods.
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All the atoms of an element have the same properties (assuming they are the same isotope). Some examples are iron, magnesium, gold, etc. Compounds are composed of two or more elements in a fixed ratio.
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A modern periodic table arranges the elements in increasing order of their atomic numbers and groups atoms with similar properties in the same vertical column (Figure 2). ... The elements are arranged in seven horizontal rows, called periods or series, and 18 vertical columns, called groups.
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The atoms of a chemical element can exist in different types. These are called isotopes. They have the same number of protons (and electrons), but different numbers of neutrons. Different isotopes of the same element have different masses.
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In chemistry, a group (also known as a family) is a column of elements in the periodic table of the chemical elements. ... Groups may also be identified using their topmost element, or have a specific name. For example, group 16 is also described as the "oxygen group" and as the "chalcogens".
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Elements in the same group of the periodic table have similar chemical properties. Elements can be classified as metals, metalloids, and nonmetals, or as a main-group elements, transition metals, and inner transition metals.
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Elements in the same group of the periodic table have similar chemical properties. Elements can be classified as metals, metalloids, and nonmetals, or as a main-group elements, transition metals, and inner transition metals. Groups are numbered 1–18 from left to right.
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In the periodic table of elements, there are seven horizontal rows of elements called periods. The vertical columns of elements are called groups, or families. The most common way the periodic table is classified by metals, nonmetals, and metalloids.
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The atoms of different elements have different numbers of electrons, protons, and neutrons. Every element is unique and has an atomic number.
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No, an element is where all atoms have the same number of protons. An ion is an atom that has different number of protons and electrons.
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Atoms of different elements are different because they contain different numbers of protons. Isotopes of the same element are different because they have different numbers of neutrons, and thus have different atomic numbers.
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Atoms of the same element that differ in their numbers of neutrons are called isotopes. Different isotopes of an element generally have the same physical and chemical properties because they have the same numbers of protons and electrons.
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Elements are atoms all of the same atomic number, i.e. all atoms of an element have the same number of protons in their nucleus. Substances can be elements but they can also be molecules. ... Substances, loosely defined as the word is, could also be compounds, which can include different kinds of molecules.
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A period is a horizontal row of the periodic table. There are seven periods in the periodic table, with each one beginning at the far left. ... A group is a vertical column of the periodic table, based on the organization of the outer shell electrons. There are a total of 18 groups.
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The next 2 groups reestablish the column trends. Elements in the same group (that is, in the same column) tend to have similar chemical properties. This concept works extremely well for group 1 (alkali metals), group 2 (alkaline earths), and group 18 (noble gases).
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Elements in the same group in the periodic table have similar chemical properties. This is because theiratoms have the same number of electrons in the highest occupied energy level. Group 1 elements are reactive metals called the alkali metals. Group 0 elements are unreactive non-metals called the noble gases.
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Two atoms of the same element can have different numbers of protons. ... Two different elements can have the same atomic number. Mass number. The sum of the protons and neutrons in the nucleus of that atom.