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liubo4ka [24]
3 years ago
13

Arrange the following substances in order of decreasing magnitude of lattice energy. Rank the compounds in order of decreasing m

agnitude of lattice energy.
MgO,
CaO,
NaF,
KCl
Physics
2 answers:
ollegr [7]3 years ago
8 0

Answer:MgO > CaO > NaF > HCl >

Explanation:Lattice energy is the energy required to break an ionic compound (solid) into gaseous ions.

Lattice energy increases as the size of the ions decreases.MgO has the highest lattice energy while HCl has the lowest magnitude of lattice energy k^+ and Cl^- ions have the largest size.

Ivan3 years ago
7 0

Answer:MgO>CaO>NaF>KCl

Explanation:

The lattice energy is one that depend on the attraction between oppositely charged ions in a compound/substance.

Following up with this the greatest forces of attraction will exist between ions that have the smallest radii.

And, because the attraction depends on the product of the charges, we prioritize ions with the greatest charge.

The smallest pair of ions will be able to get closest to each other relative to others. This implied that the smallest distance between centres will have the largest lattice energies relative to others.

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cluponka [151]

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The thickness is  \Delta y =  2.4 *10^{-6} \  m

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From the question we are told that

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Generally the condition for destructive interference is mathematically represented as

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Here y is the path difference between the central maxima(i.e the origin) and any dark fringe

So  the path difference between the 16th dark fringe and the 6th dark fringe is mathematically represented as

      y_1 - y_2 = \Delta y =  \frac{m_1 \lambda}{2} -  \frac{m_2 \lambda}{2}

=>  y_1 - y_2 = \Delta y =  \frac{16 *480*10^{-9}}{2} -  \frac{6 *480*10^{-9}}{2}

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3 years ago
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d. perfectly elastic

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2.Molecules of the gas move in a random manner.

3.The collision between molecules and with the wall of the container is perfectly elastic.That is why loss in the energy is zero.

Therefore the correct answer will be d.

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