how many electrons are in the valence shell of a?
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Most of the elements important in biology need eight electrons in their outermost shell in order to be stable, and this rule of thumb is known as the octet rule. Some atoms can be stable with an octet even though their valence shell is the 3n shell, which can hold up to 18 electrons.
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Vanadium has five valence electrons. The two electrons in the 4s sub-shell, and...
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Any element in group 18 has eight valence electrons (except for helium, which has a total of just two electrons). Examples include neon (Ne), argon (Ar), and krypton (Kr). Oxygen, like all the other elements in group 16, has six valence electrons.
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Sodium has one valence electron. The element has a full innermost electron shell of two electrons and a full shell of eight electrons in the next shell.
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Valence electrons are the number of electrons present in the outermost shell of an atom. The last shell of a chlorine atom has 7 electrons in it. Therefore, there are 7 valence electrons in an chlorine atom.
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How many more electrons can fit in the valence shell of a fluorine atom? There is room for only one additional electron within the valence shell of a fluorine atom.
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Nitrogen has a total of 5 valence electrons, so doubling that, we would have a total of 10 valence electrons with two nitrogen atoms. The octet requires an atom to have 8 total electrons in order to have a full valence shell, therefore it needs to have a triple bond.
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Platinum Number of Valence Electrons There are six valence electrons in the outer shell of the platinum.
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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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Rhenium Number of Valence Electrons Rhenium has 2 valence electrons in its outer shell.
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octet rule: Atoms lose, gain, or share electrons in order to have a full valence shell of eight electrons. Hydrogen is an exception because it can hold a maximum of two electrons in its valence level.
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They're in the outermost shell. These six outermost electrons, the valence electrons, are the only ones that take part in the reaction. Since 8+2+6=16, a sulfur atom must have the remaining six in its valence shell.
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Neon, like all noble gases, has a full valence shell. Noble gases have eight electrons in their outermost shell, except in the case of helium, which has two.
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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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For a main group element, the valence electrons are defined as those electrons residing in the electronic shell of highest principal quantum number n. Thus, the number of valence electrons that it may have depends on the electron configuration in a simple way.
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The shell closest to the nucleus, 1n, can hold two electrons, while the next shell, 2n, can hold eight, and the third shell, 3n, can hold up to eighteen. ... This outermost shell is known as the valence shell, and the electrons found in it are called valence electrons.
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The boron atom has only six electrons in its outer shell, leading to an electron deficiency. This molecule has 12 valence shell electrons; 3 each from the B atoms, and 1 each from the six H atoms.