6.Lead(Pb) is an element in Group IV of the Periodic Table(a)An oxide of lead,X,contains 90.6% of lead by mass.Calculate the empirical formula for X.(b)X is known to be a mixed oxide composed of PbO and PbO2,Based on your answer in (a),deduce the mole ratio of PbO to PbO...
How do you know what element is chemically active on the periodic table? At first, the periodic table placed the elements in order of increasing atomic mass. What property is now used instead of atomic mass? Why does the periodic table work?
Elements are numbered from left to right in order of how many protons their atoms contain. Hydrogen is the first element in the Periodic Table, as its atom contains one proton. Metals are on the left of the table, metalloids are in the middle, and nonmetals are on the right. Each squar...
What do you think causes the difference between the elements on the top of the periodic table, like carbon, with those on the bottom, like tin or lead? Why are anions always larger than the atoms from which they are formed? Elaborate on the reasons why the electronic configurations of chro...
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Lead the Bismuth for your tummy,Polonium,Astatine would not be yummy,Radon,Francium will last a little time,Radium,Then Actinides at 89,This is the Periodic Table,Noble gas is stable.Halogens and Alkali react aggressively.Each period will see new outer shells.While electrons are to the right...
Lead has the atomic number 82, and it is identified on the periodic table of elements with the symbol Pb. If you're wondering what the letters “P” and “B” have to do with L-E-A-D, the “Pb” refers to the Latin name,plumbum; the English name appears to be Celtic in origin...
Have we reached the limit of computer power? Lesson duration 05:14 264,848 Views 13:50 Science & Technology Why does everything decay into lead? Lesson duration 13:50 2,312,113 Views 05:26 Health Do you really need to take 10,000 steps a day? Lesson duration 05:26 5,011,88...
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