What is the Chemical symbol for lead?
148885
Symbol: Pb (abbreviation of its Latin name plumbum)\n\nAtomic Number: 82 \nAtomic Mass: 207.2 amu \nNumber of Protons/Electrons: 82 \nNumber of Neutrons: 125
747337
lead (IV) sulfate\nLead is a transition metal with an oxidation state of +4 in this molecule\nSulfate is a polyatomic ion made up of one sulfur atom and four oxygen atoms with a charge of -2\nIn order to have a neutral molecule there has to be one lead atom and two sulfate ions giving the following composition:\n1 Pb (lead)\n2 S (sulfur)\n8 O (oxygen)
192785
I don't know about specific laws in the Phillipines, but it will depend on what chemical and perhaps what you're going to do with it. I presume the lab store attendent knew what they were talking about? Lead is a heavy metal and is pretty freely available. Many salts of heavy metals, although fairly dangerous, are usually freely available - for example many chemicals used in photography are salts of heavy metals such as silver, gold, etc. If you order online there will generally be information available about regulations on the site. You should also always look at the MSDS (Material Safety Data Sheet) for a chemical if you are not familiar with it to get information about its risks and how to handle and dispose of it. These can be found online.\n\nI don't know how old you are, but if you are young and are considering this outside the context of school, I would suggest experienced adult supervision.
48857
Some of the elements were once known by different names than are current, such as Plumbus (Lead), that is why the symbol for ead is Pb.  Also, Sodium used to be known as Natrium, hence Na. etc, etc, etc.
152401
Do not capitalize the spelled-out names of chemical elements and compounds. When using symbols, use capital letters but no periods.\n\ncadmium Cd\niron         Fe\nsulfuric acid H2 SO4
398158
You are wrong NATURAL lead is a mixture of four stable isotopes (read NON-radioactive): 204Pb, 206Pb, 207Pb, and 208Pb . These four isotopes are the end products of each of the three series of naturally occurring radioactive elements: 206Pb for the uranium series, 207Pb for the actinium series, and 208Pb for the thorium series. Twenty seven OTHER isotopes of lead, all of which are radioactive, are recognized.\n\nLead is used as shielding because of its density. Remember that there is nothing magic about lead. Wood, air or styrofoam for that matter would work as well, but because of the density differences the same amount of shielding provided by 1" of lead might take 30" of wood or 50" of styrofoam
266285
That would be arsenic, As. It's found in the p-block of the periodic table as a metalloid. Group 15 (or group V, depending on the notation).
511125
Its either d or e. It should be a deshielding effect by the pi electrons. There is some gobbledy-gook showing up in my browser so I can't tell d or e is the pi symbol.
800068
strong - the ones containing a salt (those elements in the first column of the periodic table, except H) - Na, K, etc or a halogen (group 7 elements) - Cl, F, I, etc\n\nas for the second part, lead compounds are all soluble except for halogens, sulfates, sulfides,  and sulfites - in the above list, there are 3 compunds that will give soluble lead
941954
If you are looking for properties of some specific chemical then search for MSDS (Material Safety Dada Sheet) for that particular chemical in Google or Yahoo search engines.\nHere, I am giving you a list of websites which can give you general information on symbols. There will be slight variation in the depth of descriptive material depending on site to site.\nYou can copy and paste following links in your browser's address line:\n(1) www.geocities.com/david_charles_curran/safety\n(2) http://en.wikipedia.org/wiki/Hazard_symbol\n(3) http://www.hse.gov.uk/chip/phrases.htm\n(4) http://www.chem.utoronto.ca/healthsafety/guide/symbols.htm
191749
i agree that it's probably lead.  lead is very dense, so your things should feel very heavy for their size.  you can verify this by a couple methods:\n\n1.  get an accurate scale and measure the weight of a piece.  then get a graduated cylinder from your school and fill it partway with water.  dunk the same piece of the metal into the water and see how much the volume changes.  divide the weight by the volume to get the density.  compare this to the density of lead which is 11340 kg/m^3 or 11.34 grams/mL.\n\n2.  if you have a voltmeter, do the following:\n - get a tub of water and dissolve some salt in it\n - cut out a strip of aluminum foil and immerse one end in the water\n - take your mystery metal and immerse one end in the water\n - make sure the two metals aren't touching\n - connect one probe of the voltmeter to the aluminum, and the other probe to the metal.\n - aluminum has an electrode potential of 0.13 V and aluminum has an electrode potential of 1.66 V, so if lead is the metal then the voltmeter should read 1.66 - 0.13 = 1.53 V.\n\nsounds like you are going to have some fun!\n\nalso, lead is toxic so wear gloves and wash your hands after you handle it.
656477
pencil 'leads' are made of graphite a form of carbon.\n\nIf the pencil is painted it could contain lead in the paint, also traces of lead are possible in the wood.\n\npencil 'lead' itself is primarily Carbon and not lead
738944
Potassium chloride, Chromium oxide, Barium chlorate, Ammonium chloride, Phosphorus trichloride
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1) MgCO3\n2) AlF3\n3) BF3\n4) NH4F\n5) SnO2\n6) HCL\n7) Ca(OH)2\n8) Na2S\n9) K2SO3\n\n1) do yo mean PbCl2? then Lead (II) Chloride\n2) Lithium Bromide\n3) Potassium Sulfate\n4) Megnesium Hydroxide\n5) don't know\n6) Hydrogen Nitrate\n7) Barium Phosphate\n8) Carbon Monoxide\n9) Copper Brimide\n10) Ammonium Chloride\n11) Tin (II) Hydroxide\n12) Calcium Nitrogide\n13) Strontium Oxide\n14) Tetraiodide prefix for 9 and oxide\n\nFe^+2\nNi^2\nAg^+1
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Lead II Nitride\n\nCa(BrO2)2
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Huge order. Let's see how far it can be served.\n\n1. Monoatomic negative ions: take the element name (sometimes shortened) and add "-ide" (as in hydride, nitride, oxide, sulphide, phosphide, chloride...)\nPositive ions: element-name, charge (if several charges are possible), ion (sodium ion, iron II ion...)\n\n2. Polyatomic ions:\nComplexes with various ligands list the ligands and the central ion/atom.\nOxygen as ligands has its own nomenclature, depending on oxidation state. E.g. Sulphate, sulphite, perchlorate, chlorate, chlorite, hypochlorite...\n\n3. Binary molecular compounds: Halogen, oxygen and sulphur compounds usually have the correspondent "-ide" as if you had ionic compounds. Usually the more electropositive element is used as center.\n\n4. Acids: Oxygen acids have a similar nomenclature to oxygen ions.
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K2CrO4 +Pb(NO3)2 ---> PbCrO4(s)  + 2KNO3\n\nNice yellow ppt.