sodium has how many electrons in its outermost energy level?
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Sodium has 11 electrons. The first two fill the innermost energy level. The second energy level is also full, holding eight electrons and one electron remaining in the outer energy level. It is the number of outer electrons that give an element its chemical properties.
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Each alkali metal atom has a single electron in its outermost shell. This valence electron is much more weakly bound than those in inner shells. As a result, the alkali metals tend to form singly charged positive ions (cations) when they react with nonmetals.
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Answer. There are 10 electrons present in Na+. The atom of sodium has 11 electrons, 11 protons along with 12 neutrons, but Na+ contains one less electron, 11 protons along with 12 neutrons, as the ion has lost 1 electron.
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The rest of each atom (the nucleus and the inner electrons) is essentially a sodium ion, Na+. Metallic bonding is often described as an array of positive ions in a sea of electrons. The metal is held together by the strong forces of attraction between the delocalised electrons and the positive ions.
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The Outermost Level An atom is most stable if its outermost energy level contains as many electrons as it can hold. For example, helium has two electrons, both in the first energy level. This energy level can hold only two electrons, so helium's only energy level is full.
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Atoms like sodium, with only one or two electrons in a valence shell that needs eight electrons, are most likely to give up their valence electrons to achieve a stable state. All these atoms need is another atom that can attract their electrons!
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Protons, neutrons, and electrons are the three main subatomic particles found in an atom. The element Na has 11 protons, 11 electrons, and 12 neutrons for a total of 34 subatomic particles.
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The maximum number of electrons at a given energy level depends on its number of orbitals. There are at most two electrons per orbital. Electrons in the outermost energy level of an atom are called valence electrons. They determine many of the properties of an atom, including how reactive it is.
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Neon's outermost shell has 8 electrons. Neon therefore has 8 valence electrons. The shells of an atom can only hold so many electrons.
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Sodium chloride (NaCl) is a typical ionic compound. The picture below shows both a sodium and a chlorine ion. Sodium has 1 electron in its outermost shell, and chlorine has 7 electrons. It is easiest for sodium to lose its electron and form a +1 ion, and for chlorine to gain an electron, forming a -1 ion.
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The electron configuration of Nickel is Na 2, 8, 16, 2 where 2 electrons are present in the shell closest to the nucleus, 8 in the second closest, 16 in third and 2 in the outer shell, better known as the valence shell.
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The outer energy level for this atom is n = 3, and it has two electrons in this energy level. Therefore, magnesium has two valence electrons.
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The third "shell" is a bit more complicated but let's just say that it takes up to 8 electrons as well (for now...). So, sodium's 11 electrons are arranged this way: 2 electrons in the first "shell", 8 electrons in the second "shell"; and 1 electron (the valence electron) in the third "shell".
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The element sodium is made up of all atoms with 11 protons. How many protons, electrons, and neutrons are in a sodium-23 atom? Since all sodium atoms have 11 protons, this one has 11 protons. This tells us that it also has 11 electrons.
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A: A neon atom has two electrons in energy level I and its remaining eight electrons in energy level II, which can hold only eight electrons. This means that is outermost energy level is full.
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This atom will have Eleven electrons. The element sodium has 12 neutrons, 11 electrons and 11 protons. The number of electrons and protons come from the element's atomic number, which is same 11. The number of neutrons can be found by subtraction of the atomic number from sodium's atomic mass of twenty three.
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The outermost orbitals, 3s2 3p3 , contains 5 electrons. Thus, valence electrons for P is 5.