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Ganezh [65]
2 years ago
15

Pleas help me i have to submit homework i hour i will mark brainliest

Chemistry
1 answer:
steposvetlana [31]2 years ago
6 0

Answer:

I can help

Explanation:

++++++++++++++++++++++++++++

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The radii of the lithium and magnesium ions are 76 pm and 72 pm, respectively. which compound has stronger ionic attraction, lit
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 <span>From the Born–Landé equation the lattice energy U ∝ (Z+ × Z-) / (r+ + r-) where Z+ and Z- are the charges on the cation and anion, respectively; r+ and r- are radii of the cation and anion, respectively.

The Z+×Z- term dominates. MgO has 2×2 (4) so it will have the higher U than Li2O Z+ × Z- = 2.
You only consider (r+ + r-) term when the Z+×Z- term is the same; smallest the (r+ + r-),  the larger is the U. 
U(MgO) = 3795 </span>kJ mol^-1
<span>U(Li2O) = 2799 kJ mol^-1 

MgO has larger.

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How many moles are 6.022(10^23) atoms of sodium
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There is only one mole
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Is relative dating an effective way to determine the age of rocks?
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La primera parte de su teoría establece que toda la materia está hecha de átomos, que son indivisibles.

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Partes de su teoría tuvieron que ser modificadas con base en el descubrimiento de las partículas subatómicas y los isótopos.

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