what happens to valence electrons when a molecular compound forms?
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Valence Electrons. ... When elements share electrons, a strong covalent bond is formed. When an element gives away an outer electron, it results in oppositely charged ions that are held together by a weaker ionic bond.
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Electron-deficient molecules. ... Boron commonly makes only three covalent bonds, resulting in only six valence electrons around the B atom. A well-known example is BF 3: The third violation to the octet rule is found in those compounds with more than eight electrons assigned to their valence shell.
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Name an ionic compound by the cation followed by the anion. ... Covalent compounds are formed when two or more nonmetal atoms bond by sharing valence electrons. Valence electrons are the outermost electrons of an atom.
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Covalent or molecular compounds contain atoms held together by covalent bonds. These bonds form when the atoms share electrons because they have similar electronegativity values. Covalent compounds are a diverse group of molecules, so there are several exceptions to each 'rule'.
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A valence electron is an electron in one of the outer shells of an atom that can participate in forming chemical bonds with other atoms. Since potassium only forms compounds with a singly charged ion, the valence is +1, and there is only one valence electron.
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Ionic compounds are formed as the result of the formation of positive and negative ions. Electrons are actually transferred from one atom to another to form rare gas electron structures for each ion. The atom which forms a positive ion loses electrons to the atom which gains electrons to form a negative ion.
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Valence electrons. The electrons available to be lost, gained, or shared in the formation of chemical compounds. Electron Dot Notation. an electron-configuration no- tation in which only the valence electrons of an atom of a particular element are shown, indicated by dots placed around the element's symbol.
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A bromine (Br) atom has 7 valence electrons. Valence electrons are the outermost electrons in an atom, which affect how atoms might react with one...
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Stefan V. The number of valence electrons for molecules can be calculated by adding the valence electrons of all the atoms that form that respective molecule. 2⋅1+1⋅6=8 valence electroncs. 2⋅1+1⋅6+4⋅6=32e− .
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For ionic bonding, valence electrons are gained or lost to form a charged ion, and in covalent bonding, the valence electrons are shared directly. The resulting molecules created through both ionic and covalent bonding are electrically neutral.
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Where V = (6 + 4 + 5) – (-1) = 16 , V is the number of valence electrons of the molecule.
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Molecular compounds are electrically neutral. Ionic compounds are (usually) formed when a metal reacts with a nonmetal (or a polyatomic ion). Covalent compounds are formed when two nonmetals react with each other. Since hydrogen is a nonmetal, binary compounds containing hydrogen are also usually covalent compounds.
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What is the particular significance of valence electrons? Valence electrons form chemical bonds between atoms by being transferred or shared. ... one atom gives up one or more valence electrons to another atom. Covalent Bond. chemical bonds created by sharing a pair of electrons between atoms.
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['A molecular compound is usually composed of two or more nonmetal elements.', 'Molecular compounds are named with the first element first and then the second element by using the stem of the element name plus the suffix -ide. Numerical prefixes are used to specify the number of atoms in a molecule.']
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This can only occur when the valence shell has enough orbitals to accommodate the extra electrons. For example, in the case of phosphorus, the valence shell has a principal quantum number n = 3. An octet would be 3s23p6. ... Thus nitrogen can form NF3 (in which nitrogen has an octet) but not NF5.
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Explanation: Understanding valence electrons is key to understanding chemical bonding. Delocalized valence electrons produce metallic bonds (bonds between atoms of metals) which give metals unique properties such as conductivity and ductility (draw metal into wires).
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The term covalent refers to a type of bonding in which pairs of valence electrons are shared by two atoms. Covalent compounds are those that exhibit covalent bonding. Molecular compounds are a type of covalent compound. Molecular compounds exist as individual molecules.