How many valence electrons does aluminum have?
458583
aluminum has 3 valence electrons
844206
The answer is simple. All elements (whose basic units are atoms) except the noble gases, have less than 8 electrons in their valence shells.  The rule that states that atoms should have 8 electrons to achieve stability is called The Octet Rule.\n\nhttp://en.wikipedia.org/wiki/Octet_rule\n\nThe way that they can attain 8 electrons is by forming BONDS: by either sharing electrons (covalent bond) or by gaining/losing electrons (ionic bond).   This is the main reason why atoms react: to attain 8 valence electrons.\n\nIf we look at it at another angle, we can say that atoms react in order to decrease energy.  This comes from the principle that bond formation results in loss of energy, and that stability comes from decreased energy.\n\nHope that helps.
146528
27=13 protons + 14 neutrons.  For aluminium always have 13 protons (the atomic numbers), otherwise will be another element.  Number of electrons, it is not anion just the alumnium in the metallic state will be the same as atomic number, in this case 13.
120648
determine how many valence electrons each atom has. locate the central atom and spread out its valence electrons(each electron is represented by a dot). then pair up one from the atoms attached to the central atom. finally put all the other electrons for each outer atom around it.\nyou should see all electrons paired up, many times each atom will end up with eight electrons around it but many times there will be more or less than eight.
227254
The general valence shell electronic configuration is\nns2 np3.\nAnd the elements along the group are :-\n1.Nitrogen (N)\n2.Phosphorous (P)\n3.Arsenic (As)\n4.Antimony (Sb)\n5.Bismuth (Bi)\n6.Ununpentium (Uup)\n\nCheck it out in various books above 10th grade
563557
Metals have 1 or 2 or 3 electrons in their outer shell. Non metals have 4, 5, 6, 7 or 8 electrons in their outer shell. (Strictly speaking, elements with 4 electrons in their outer shell are semi-metals or metalloids.)
443303
It only has 7 valence electrons :)\n\nRival
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Group 6A contains oxygen, sulfur, selenium and tellurium.\n\na) Any of these form ions with a double negative charge.\n\nb) consequently, the formular can be expected to be Al2X3\n\nc) 18.55% percent Aluminium by mass means that 81.45% of the mass is taken up by X.\n\nThat's 9.275% per Aluminium ion and 27.15% per X ion.\n\nTo determine the atomic mass of X, you take the atomic mass of Aluminium (27 is exact enough for our  purposes), divide it by the mass percentage per Al ion and multiply by the mass percentage per X ion:\n\n27 / 9.275 * 27.15 = 79\n\nA quick look into the periodic table reveals that this is the atomic mass of Selenium.
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1. AgO or Ag2O because silver can have a valency of +1 or +2. Sulphur has a valency of 2-.\n2. Al2O3 aluminium oxide\n3. KI potassium iodide\n4. H2S hydrogen sulphide\n5. CaF2 calcium flouride\n\nHope this helps!
152932
alkaline earth metals are group 2A in the periodic table, they are Be, Mg, Ca, Sr, Ba, Ra.\nhalide is the name of salt that has halogen group (group 7A).they are F, Cl, I, Br, At.\nSince the valence of alkaline is 2 and that of halogen is 1, we'll have this chemical formula: MX2 (can't type subscript :P ) (2 should be typed in subscript).\nFor example: MgCl2, MgI2, BaCl2, CaBr2,....
701458
A valence electron is the outer most shell of electrons in an atom
711193
valence electrons are electrons on the outer most energy level.. therefor 6
482317
Atomic wt of Al is 13,Cu is 29,Zn is 30 and Fe is 26.So less atomic wt,Al contains more number of atoms in 50gm
12366
Hi again,\n\n    Well you see, as you know electrons are added up in the 3d orbital in galium, right? So with the increase in number of electrons, the no of protons i.e atomic number also increases. So now the outermost p electron in Al is attracted by 13 protons. But that in galuim is attracted by 31 electrons. So the force of attraction is much more. Now in other atoms, these outer electron attraction is balanced by counter electron electron repulsion. But the added d electrons  cannot shield the outer p electrons much from the force of attraction of the highly charged nucleus. This is similar to the reason why the transition elements contract on increase in at no. Other examples are lanthanide and actinide contractions. If you still dont get it,\nmeet me on Yahoo Messenger. My id is jchemisch. I will talk to you about it. All the best. Hope i can help you if you need!!
631016
Aluminium or aluminum (see the spelling section below) is the chemical element in the periodic table that has the symbol Al and atomic number 13. It is a silvery and ductile member of the poor metal group of chemical elements. Aluminium is found primarily as the ore bauxite and is remarkable for its resistance to corrosion (due to the phenomenon of passivation) and its light weight. Aluminium is used in many industries to make millions of different products and is very important to the world economy. Structural components made from aluminium and its alloys are vital to the aerospace industry and very important in other areas of transportation and building in which light weight, durability, and strength are needed.\n\nMore information at the link below! Hope that helps.
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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.
853125
The atomic number of Aluminum is 13 (look at a periodic table). This means 13 protons and 13 electrons (since these are oppositely charged they have to balance each other.) To find the number of neutrons you subtract the number of protons from the atomic mass (the atomic mass is 27). So 27-13= 14 neutrons