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Layers of the Earth

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What is the difference between enthalpy of formation and lattice energy?

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Q. The ionization enthalpy of

N a^{+}

N a (g)

495.8 k J m o l^{- 1}

, while the electron gain enthalpy of Br is

- 325.0 k J m o l^{- 1}

. Given the lattice enthalpy of

N a B r

- 728.4 k J m o l^{- 1}

. The energy for the formation of

N a B r

ionic solid from Na(g) and Br(g) is (-)__________

\times 10^{- 1} k J m o l^{- 1}

Q. The relation between the magnitudes of lattice energy of crystal and its formation energy is:

Q. "In ionic slids the sum of the electron gain enthalpy and ionization enthalpy may be positive but still the structure gets stabilised due to the energy released in the formation of the crystal lattice".explain.

Q. The ionization enthalpy of

N a^{+}

N a (g)

495.8 k J m o l^{- 1}

while the electron gain enthalpy of

B r

- 325.0 k J m o l^{- 1}

. Given the lattice enthalpy of

N a B r

- 728.4 k J m o l^{- 1}

. The energy for the formation of

N a B r

ionic solid is (–) _____

\times 10^{- 1} k J m o l^{- 1}

What is meant by Lattice energy, ionisation energy.

Sir/Ma'am what is the difference between them

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