According to the periodic table the element fluorine is classified as a?
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Halogen\nHalogens : flourine , chlorine , bromine and iodine \nHav valency 1 And diatomic and hav oxd.number -1
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Oxidizing agents remove electrons from other atoms to complete a stable outer octet.  Therefore, oxygen and fluorine are oxidzers.  (Hydrogen and lithium, because they can lose electrons more easily than accept them, are reducing agents.)\nSo, of the two oxidizers which is better?  It will be the one that is more electronegative.  Electronegativity increases left to right on a row in the periodic table*.  F is therefore more electronegative than O, so the winner is F.\n'Chemistry is full of exceptions and this rule does not hold for the noble family (VIIIa) because their electron structures are fully satisfied.
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In chemistry, a metal (Greek: Metallon) is an element that readily forms ions (cations) and has metallic bonds. Metals are sometimes described as a lattice of positive ions (cations) surrounded by a cloud of delocalized electrons. The metals are one of the three groups of elements as distinguished by their ionisation and bonding properties, along with the metalloids and nonmetals. On the periodic table, a diagonal line drawn from boron (B) to polonium (Po) separates the metals from the nonmetals. Elements on this line are metalloids, sometimes called semi-metals; elements to the lower left are metals; elements to the upper right are nonmetals.
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It is the most chemically active nonmetallic element and is the most electronegative of all the elements. Fluorine reacts with most inorganic and organic compounds
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The halogens can be found in column 17 of the Periodic Table.  They are called Group VII because they all have 7 electrons in their outer orbitals.\n\nThe lighter ones (Fluorine & Chlorine) are gases at room temperature.  Bromine is a liquid, while Iodine & Astatine are solids.  All tend to rapidly react by gaining an electron (they are good oxidizers).\n\nThe noble gases can be found in column 18 of the Periodic Table.  They are called Group VIII because they all have 8 electrons in their outer orbitals.\n\nHaving full outer orbitals, the noble gases usually do not react with other elements.  This is why they are sometimes called the Inert Gases.  Several compounds of Xenon and Fluorine and Oxygen have been make and studies, however.
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A chemical element, often called simply an element, is a substance that cannot be decomposed or transformed into other chemical substances by ordinary chemical processes. All matter consists of these elements and as of 2006, 117 unique elements have been discovered or artificially created. The smallest particle of such an element is an atom, which consists of electrons centered about a nucleus of protons and neutrons.
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Sodium fluoride is an ionic compound, so you can't really say that you have one "molecule" of sodium fluoride. Instead, what you have is an alternating arrangement of sodium and fluoride ions in a 6-coordinate ocathedral pattern in a crystal lattice. A nice picture of this is at the website listed below.
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Sodium Chloride is an obvious example, as is Potassium Flouride, Lithium Bromide, or any other combination os the alkali metals and halogens from the periodic table.\n\nThe alkali metals are on the far left column of the table, and halogens are on the column 2nd from the right (next to last).\n\nAll of these combinations are collectively refered to as "salts".\nA salt is an ionic compound which contains a metal cation (+) and a nom-metal anion (-).  It is not a requirement that it be a specific type of metal or a specific type of non-metal though, for example, Iron Oxide is also technically a "salt", but it is more commonly refered to as an "Oxide", a more specific type of salt.\n\nhttp://www.webelements.com/index.html
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Chlorine is further down on the column in the periodic table.  Chlorine has a larger electron cloud than Fluorine.
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Astatine (IPA: /ˈastətiːn/) is a chemical element in the periodic table that has the symbol At and atomic number 85. This radioactive element occurs naturally from uranium-235 and uranium-238 decay and is the heaviest of the halogens.\nThis highly radioactive element has been confirmed by mass spectrometers to behave chemically much like other halogens, especially iodine (it would probably accumulate in the thyroid gland like iodine). Astatine is thought to be more metallic than iodine. Researchers at the Brookhaven National Laboratory have performed experiments that have identified and measured elementary reactions that involve astatine.\n\nAstatine is the rarest naturally occurring element with the total amount in Earth's crust estimated to be less than 1 oz (28 g) at any one time; this amounts to less than one teaspoon of the element. The Guinness Book of Records has dubbed the element the rarest on Earth, stating: "Only around 0.9 oz (25 g) of the element astatine (At) occurring naturally."
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Mercury and Bromine are the only liquids in the Periodic table. Francium, cesium, gallium, and rubidium are four elements that melt at temperatures slightly higher than room temperature.
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Chlorofluorocarbons (CFCs) are nontoxic, nonflammable chemicals containing atoms of carbon, chlorine, and fluorine. They are used in the manufacture of aerosol sprays, blowing agents for foams and packing materials, as solvents, and as refrigerants. CFCs are classified as halocarbons, a class of compounds that contain atoms of carbon and halogen atoms. Individual CFC molecules are labeled with a unique numbering system. For example, the CFC number of 11 indicates the number of atoms of carbon, hydrogen, fluorine, and chlorine (e.g. CCl3F as CFC-11). The best way to remember the system is the "rule of 90" or add 90 to the CFC number where the first digit is the number of carbon atoms (C), the second digit is the number of hydrogen atoms (H), and the third digit is number of the fluorine atoms (F). The total number of chlorine atoms (Cl) are calculated by the expression: Cl = 2(C+1) - H - F. In the example CFC-11 has one carbon, no hydrogen, one fluorine, and therefore 3 chlorine atoms.
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1. C, 2. Cl, 3. Se. The closer the atom is to Fluorine on the Periodic table (excluding noble gases), the stronger the electron affinity. Fluorine is the strongest.
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Magnesium is the 12th element (atomic number 12).\n\nCarbon is the 6th element, but has an atomic mass of 12.
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I think ur referring to the chemical definitions.\n\nIn the periodic table, groups are the vertical columns having similar elements... ie. they have the same valencies leading to similar properties.. Example Group 1: has valency 1.. (Na, K etc)\n\nperiods are horizontal rows having elements with the same number of shells.. ie.. 1st period elements have only one shell (H and He - K shell).. 2nd period elements have 2 shells (K,L) and so on..\n\nLook up wikipedia for more info..
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If it existed, it would be boron pentafluoride, but as far as I know, this is not a stable molecule.\n\nAre you sure you don't mean BrF5 (bromine pentafluoride), which does exist as a stable molecule?
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The Periodic Table of the Elements, as developed by Mendeleev.