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Boron is one position to the left of carbon on the periodic table. The atomic nurnber of carbon is 6. Given its position on the periodic table, what is the atomic number of boron?
The 100 or so are characterized by $Z_"atomic number"$...which specifies the number of charged particles present in the element's nucleus. $"Z=1, hydrogen; Z=2, helium"$ $"Z=3, lithium; Z=4, beryllium; Z=5, boron;...
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A chemical compound requires 8 ounces of Chemical A and 12 ounces of Chemical B. A mixture contains 24 ounces of Chemical A and 30 ounces of Chemical B. How can you fix the mixture to make the chemical compound?
Since 8x3=24 and since 12x3=36 you need to add 6oz of chemical B to have 24oz of chemical A and 36oz of chemical B. Take 1/3 of the total mixture...
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How does the periodic table tell you the subscripts for elements in chemical formulas?
does not tell you the subscripts for in chemical formulas. For the main group (or representative) elements, which are all of the elements except the transition and inner transition...
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Which group on the Periodic Table of the Elements contains elements that react with oxygen to form compounds with the general formula $X_2O$?
Including Hydrogen (though Hydrogen is sometimes not put obviously as part of group 1)
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What is the similarity in chemical properties of the atoms of elements in a group of the periodic table is most closely related to?
Atoms from the same Group of have the same number and symmetry of , and this electronic similarity should give rise to similar chemistry. And indeed it does.......
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What elements touch the staircase in the periodic table and have properties of both metals and non-metals?
A metalloid is an element whose properties are "in between" those of . For example, metals are excellent electothermal conductors, and nonmetals are non-conductors. Metalloids are described as semiconductors....
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For the main group elements (excluding the transition elements), is it necessary memorize to memorize the type of ion each element makes or could you predict the Ion charge using a periodic table?
The Group number represents the number of . And thus the alkali metals have the ONE valence electron, and the alkaline earths have TWO . And typically, they lose...
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The chemical family of elements called the noble gases are found in what column of the periodic table?
What is the rightmost COLUMN as you face the Table? The $"halogens"$ are $"Group 17"$, so the $"Noble Gases"$ are $"Group......"$??
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What are the elements in the rightmost columns of the Periodic Table, as we face the Table?
The halogens, fluorine, chlorine, bromine, iodine, are all non-metals. Astatine is so rare that its chemistry would be limited. The Noble Gases all have a complete valence shell, and are...
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Does electronegativity increase or decrease when you go a period on the periodic table? Does it increase or decrease when you move down a group on the periodic table?
As we face , increases ACROSS the Period from LEFT to RIGHT, BUT DECREASES down a Group, a column of the the Periodic Table. So why? Well, we will first...
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