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What is Ionis...

Question

What is Ionisation Energy (Enthalpy Energy)?

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Solution

Ionisation energy is the energy required to removed the most loosely bound electrons from an isolated gaseous atom or ions. It is the energy than an isolated gaseous atom or ions must absorb to discharge an electrons, forming a cation.

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Q. Ionisation energy of

F^{-}

320 k J m o l^{- 1}

. The electron gain enthalpy of fluorine would be:

Q. Identify the elements

X

Y

using the ionisation energy values given below :

	1st Ionisation Enthalpy(KJ/mol)	2nd Ionisation Enthalpy(KJ/mol)
$X$	$495$	$4563$
$Y$	$731$	$1450$

Q. Ionisation of energy of

F^{-}

320 {kJ mol}^{- 1}

. The electron gain enthalpy of fluorine would be

Q. Assertion :For an element, second ionisation enthalpy will be higher than the first ionisation enthalpy. Reason: Second ionisation enthalpy is sum of energies required to remove two electrons.

Q. Energy involved to ionise

O_{2} (g)

O^{2 -} (g)

639 {kJ mol}^{- 1}

. If the ionisation enthalpy of

O^{-} (g)

141 {kJ mol}^{- 1}

. The second electron gain enthalpy of oxygen would be:

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