How many core electrons are in each of the following atoms?
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Electrons in the outermost shell are called valence electrons.\n·  It is the valence electrons determine an atom’s chemical properties.\n·  Electrons in the inner shells are inner electrons or core electrons.\n\nThe total number of electrons is revealed by the atomic number:\nNa - At#:11 valency:1 valency electrons:1 core:10\nSe - At#:34 valency:2 valency electrons:6 core:28\nPb - At#:82 valency:4 valency electrons:4 core:78
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boron has five protons and electrons
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the short answer is valence shell electrons.
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Valence electrons are those electrons in an atom outside the noble-gas core.  Valance electrons are the electrons in the outermost principal quantum level.  Valance electrons are the electrons which are most often involved in reactions and forming chemical bonds.\n\nPotassium has a single valence electron, 4s1, which comes from the 4s subshell.\n\nChlorine has a total of seven valence electrons, 3s2 3p5, two from the 3s subshell and five from the 3p subshell.\n\nGold = 5d10 6s1\n\nNeodymium - 4f4 6s2\n\nYou can look up each element at the site below.
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1\nThere are 2 Hydrogen atoms, 1 Sulfur atom (as idicated by the absence of any subscript) and 4 Oxygen atoms.
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3 hydrogen\n1 phosporus\n4 oxygen\n\ntotal atoms 8\n\nThe subscripts tell you how many atoms of each element are present.  If there is not a subscript after a symbol, you assume there is only one atom of that element.
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Find the number of protons. Then number of electrons = number of protons.
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You mean the Valence Shell Configuration?\n\nIt is easy to find this by simply looking at the Group # (these are the column numbers). \n\nElements in Group 1 all have 1 electron in their valence shell, Elements in group 2 have 2 and so on...\n'\nIf you mean how many shells there are then look at the Period #  this is the horizontal groups) the Period # corresponds with the number of electron shells.\n\nElements in Period 2 have 2 electron shells, elements in Period 3 have 3 and so on...
27684
Protons, neutrons, and electrons.
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33 (also 33 electrons and this is the atomic number too)
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to attain an octet electron config.\n\nzinc has 10 electrons in its valence shell. it gives up 2 when it ionises so it can form the magic 8 that is stable. fyi, many atoms in the the table strive to attain this 8, and this principle drives the understanding of many compounds formed from the elements.
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Ti(4+) = 18 electrons.\nSo the atom, which forms a stable compound without forming an ion, is first of all an inert gas and has 18 protons and electrons. that's argon.\n\nHope this helps=)
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The question asks specifically how many electrons can the be in the third ring of an atom. So the answer is 8 not 18. There maybe a total of 18 electrons around the atom but in the third shell there are 8. This is of course using a rather outdated concept of the atom, we should not, strictly speaking think of electrons as orbiting in shells.
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Carbon's atomic number is six.  The innermost shell contains two electrons.  The next shell needs eight to be complete, but carbon has only four left.  Therefore, it needs four additional electrons to complete the shell.
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I'll do one for you and then you can try the rest.\n\nMagnesium has 12 electrons, so follow your filling order. Each s orbital holds to electrons and each p orbital holds 6, so its:\n\n1s2 2s2 2p6 3s2\n\nIt has 2 electrons in its outer shell so to have a full outer shell it will lose 2 therefore the common ion It forms is Mg2+
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1)electron ...(also negative meson)\n2)the atom is the basic (many atoms make molecule and so on)\n3)polymer (the most famous are protiens)
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The correct answer is 3 Nitrogen \n\n7 electrons as follows 1s2 2s2  2p3  . The sublevel 2p3 can theoretically contain  6 electrons and has only 3\n\n\nHelium and neon are noble gases. All the sublevels are filled\n\nBeryllium  has  4 electrons and  2 on shell K 2 and 2 on sublevel 2s complete