why is sodium called na on the periodic table?
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Sodium gets its name from the English word soda. This is because Sir Humphry Davy used caustic soda when isolating the element. The symbol Na comes from the Latin word natrium. Only one of the 20 known isotopes of sodium is stable, sodium-23.
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We know that the atomic number of sodium is 11. This tells us that sodium has 11 protons and because it is neutral it has 11 electrons.
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Why are elements in the tall columns of the periodic table called "representative elements"?
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The vertical columns on the periodic table are called groups or families because of their similar chemical behavior. All the members of a family of elements have the same number of valence electrons and similar chemical properties. The horizontal rows on the periodic table are called periods.
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Reason : A sodium atom and sodium ion, both have the same nucleus (same number of protons and neutrons). The only difference is that the ion has one less electron than the atom.
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Sodium is a chemical element with the symbol Na (from Latin "natrium") and atomic number 11. It is a soft, silvery-white, highly reactive metal. Sodium is an alkali metal, being in group 1 of the periodic table. Its only stable isotope is 23Na.
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The mass number is given at the top left of the elements symbol, for example, sodium has a mass number of 23. We know that the atomic number of sodium is 11. This tells us that sodium has 11 protons and because it is neutral it has 11 electrons.
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Lithium, sodium, and potassium are placed in the same group on the periodic table because all three elements rhyme and also those three elements have qualities that are really simular.
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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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Consider sodium: in its elemental form, it has one valence electron and is stable. It is rather reactive, however, and does not require a lot of energy to remove that electron to make the Na + ion.
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Why is the periodic table called the periodic table? It is called the periodic table because of the way the elements are arranged. You'll notice they're in rows and columns.
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Molecules have molecular bonds. ... Something like table salt (NaCl) is a compound because it is made from more than one kind of element (sodium and chlorine), but it is not a molecule because the bond that holds NaCl together is an ionic bond. If you like, you can say that sodium chloride is an ionic compound.
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Sodium chloride, regular table salt, is also known as the mineral halite. The diagram to the right shows how sodium and chlorine atoms pack tightly together to form cube-like units of the compound NaCl. Crystals of table salt imitate this structure-they're shaped like little cubes.
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2 Na refers to 2 Na atoms. Na2 refers to a diatomic molecule containing two Na atoms bonded together. The two are very different chemicals and you would be docked lots of points if you arbitrarily jumped between the two throughout the treatment of a problem.
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The most reactive metals belong to the alkali metals element group. ... So, just by looking at the periodic table, you can predict lithium will be less reactive than sodium, and francium will be more reactive than cesium and all of the other elements listed above it in the element group.
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Group 1 - the alkali metals The Group 1 elements in the periodic table are known as the alkali metals. They include lithium, sodium and potassium, which all react vigorously with water to produce an alkaline solution.
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The reaction between sodium and oxygen is called oxidation because electrons are transferred from one atom to another. ... When sodium reacts with oxygen each sodium atom loses an electron, which means sodium is oxidized, and each oxygen gains two electrons, meaning it's reduced.