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Electronic configuration of atomic
Would you expect it to be easier to remove an electron from a
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In the ground state, each atom of an element has two valence electrons. This element has a lower first ionization energy than calcium. Where is this element located on the Periodic Table?
It is a period or row that is energy level five or more, below calcium on . Two valence electrons places the element in the alkaline earth family or...
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Magnesium is found to have a higher first ionization energy value than aluminum, how would you explain this exception to the general trend in terms of electron arrangements and attraction/repulsion?
For Mg, $Z$ $=$ $12$. Therefore its electronic configuration is $1s^(2)2s^(2)2p^(6)3s^(2)$; versus Al, $Z$ $=$ $13$; $1s^(2)2s^(2)2p^(6)3s^(2)3p^(1)$. While aluminum metal has extra nuclear charge, $p$ orbitals demonstrably have zero electron...
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The ionization energy of aluminum is 577.6kJ/mol. What is the longest wavelength of light to which a single photon could ionize an aluminum atom?
The first thing to do here is to calculate the ionization energy for one atom of aluminium, $"Al"$, by suing the fact that you know the energy needed to ionize...
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Which metal will have the highest third ionization energy, magnesium or aluminum?
Consider the electronic configurations of aluminum, and magnesium. $Mg,$ $Z=12$: $1s^(2)2s^(2)2p^(6)3s^(2)$. $Al,$ $Z=13$: $1s^(2)2s^(2)2p^(6)3s^(2)3p^1$ Because the third ionization energy involves the removal of a $2p$ electron, that is more closely...
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Why is the first ionization energy of $"O"$ lower than for $"N"$, but the second ionization energy for $"O"$ higher?
Well, I would use to check these. I looked up the first two ionization energies (by typing the atomic symbol) and got... $"IE"_1 ("N") = "14.534 eV"" "" ""...
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Why is the ionization energy of beryllium, $Z=4$, GREATER than the ionization energy of boron, $Z=5$?
And we consider the ELEMENT not the molecule, inasmuch as this is how ionization enthalpies are defined...... $"Atom(g)"+Deltararr"Atom(g)"^+ + e^(-)$ For $Be$ we gots $Z=4$, $1s^(2)2s^(2)$ For $B$ we gots...
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I did a Magnesium Oxide Lab.Magnesium often reacts with nitrogen in the air. If some of the magnesium had reacted with the nitrogen, would it make the % composition of ur sample higher or lower than it should be? Explain (Hint-Try a sample calculation).
Okay, so you've performed the classic magnesium oxide lab. I assume that you have your data, so I'll just walk you through this from a theoretical standpoint. So, you...
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In the gravimetric analysis of magnesium, when combusted to magnesium oxide, why should care be taken to collect all of the magnesium oxide is retained by the crucible?
.....the following reaction occurs. $Mg(s) + 1/2O_2(g) rarr MgO(s)+Delta$ The magnesium oxide is a finely divided white solid, and CAN be lost during the exothermic combustion reaction. Nevertheless, given complete...
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A mixture of magnesium carbonate and magnesium oxide of mass $12.46*g$ underwent fierce heating. After heating, there were $8.43*g$ of salt remaining. What were the masses of magnesium carbonate, and magnesium oxide in the original sample?
$MgCO_3(s)+DeltararrMgO(s) + CO_2(g)$ And we would have to heat the magnesium salt VERY fiercely to get complete decarboxylation. $"Moles of carbon dioxide LOST"$ $=$ $(4.40*g)/(44.01*g*mol^-1)$ $=0.010*mol$ And therefore in...
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Aluminum oxide is decomposed to extract pure aluminum from the mineral. If 6.7 tons of aluminum oxide is mined, calculate the mass of pure aluminum produced?
1 mole of aluminum oxide has a molecular weight of 102 grams (Al=27 grams and O=16 grams). It means that for 1000 kg of compound you can get 529 kilograms...
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