what are valence electrons in the periodic table?
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In chemistry and physics, a valence electron is an outer shell electron that is associated with an atom, and that can participate in the formation of a chemical bond if the outer shell is not closed; in a single covalent bond, both atoms in the bond contribute one valence electron in order to form a shared pair.
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Answer and Explanation: A bromine (Br) atom has 7 valence electrons.
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Valence Electrons Worksheet. The valence electrons are the electrons in the outermost energy level. They are always the outermost electrons. Atoms that LOSE electrons are called cations and have an overall positive charge.
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A valence electron is an electron that is found on the outermost part of an atom and can be shared or taken in a reaction. Why do elements in periodic table have different numbers of valence electrons? They have different chemical structures. Valence electrons are what create chemical reactions.
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Recall that the valence electrons of an atom are the electrons located in the highest occupied principal energy level. Valence electrons are primarily responsible for the chemical properties of elements. ... The eight valence electrons, a full outer s and p sublevel, give the noble gases their special stability.
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1 Answer. The members of the boron family have 3 valence electrons.
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Valency of an atom/element is the number of bonds it is able to form around it. Valence electrons are generally in the outermost shell of the element and takes part in the formation of chemical bonds.
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The alkaline earth metals have two valence electrons. The alkaline earth metals are in the second family on the periodic table.
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2 Answers. Most transition metals have 2 valence electrons. Valence electrons are the sum total of all the electrons in the highest energy level (principal quantum number n). Most transition metals have an electron configuration that is ns2(n−1)d , so those ns2 electrons are the valence electrons.
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Valence electrons are important, as they indicate an element's bonding behavior, stability, and reactivity.
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Metal atoms have 1, 2 or 3 electrons in their valence shells whereas non-metal atoms have 4 to 7 electrons in their valence shells.
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In chemistry, valence electrons are the electrons that are located in the outermost electron shell of an element.
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Most transition metals have 2 valence electrons. Valence electrons are the sum total of all the electrons in the highest energy level (principal quantum number n). Most transition metals have an electron configuration that is ns2(n−1)d , so those ns2 electrons are the valence electrons.
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Stefan V. Valence electrons are defined as the electrons capable of forming chemical bonds with other atoms, and are lcoated in the outermost shell of the atom. As its electron configuration shows, Be has 2 valence electrons located in the 2s subshell.
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Valence electrons are the electrons orbiting the nucleus in the outermost atomic shell of an atom. Electrons that are closer to the nucleus are in filled orbitals and are called core electrons.
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Valence electrons are the electrons in the outermost shell, or energy level, of an atom. For example, oxygen has six valence electrons, two in the 2s subshell and four in the 2p subshell.
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Valence electrons are electrons in the highest principal energy level. They are electrons that sit on the outermost orbit of an element. They are responsible for bonding and chemical properties of each element.