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Standard XI
Chemistry
NCERT
Question

Which one of the following statements is incorrect in relation to ionization enthalpy?
(a) Ionization enthalpy increases for each successive electron.
(b) The greatest increases in ionization enthalpy is experienced on removal of electron from core noble gas configuration.
(c) End of valence electrons is marked by a big jump in ionization enthalpy.
(d) Removal of electron from orbitals bearing lower n value is easier than from orbital having higher n value.

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Solution
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The option (d) represents incorrect statement. It states that
"Removal of electron from orbitals bearing lower n value is easier than from orbital having higher n value".
The correct statement is "Removal of electron from orbitals bearing lower n value is difficult than from orbital having higher n value".
The attraction between the nucleus and the electron present in orbital having lower n value is higher than the attraction between the nucleus and the electron present in orbital having higher n value.

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Similar Questions
Q1

Which one of the following statements is incorrect in relation to ionization enthalpy?

(a) Ionization enthalpy increases for each successive electron.

(b) The greatest increase in ionization enthalpy is experienced on removal of electron from core noble gas configuration.

(c) End of valence electrons is marked by a big jump in ionization enthalpy.

(d) Removal of electron from orbitals bearing lower n value is easier than from orbital having higher n value.

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Q2
Which one of the following statements is incorrect in relation to ionization enthalpy?
(a) Ionization enthalpy increases for each successive electron.
(b) The greatest increases in ionization enthalpy is experienced on removal of electron from core noble gas configuration.
(c) End of valence electrons is marked by a big jump in ionization enthalpy.
(d) Removal of electron from orbitals bearing lower n value is easier than from orbital having higher n value.
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Q3
Consider the following statements and arrange in the order of true/false as given in the codes.
S1: In the modern periodic table each block contains a number of columns equal to the number of electrons that can occupy that sub-shell.
S2: the greatest increase in ionization enthalpy is experienced on the removal of the electron from the core noble gas configuration.
S3: The size of the isoelectronic species is affected by electron-electron interaction in the outer orbitals.
S4: Anything that influences the valence electrons will affect the chemistry of the element and the valence shell is not affected by nuclear mass.
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Q4
How much energy is required to ionise H atom if the electron occupies n = 5 orbits? Compare your answer with the ionization enthalpy of H atom
[ energy required to remove the electron from n =1 orbit].
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Q5

How much energy is required to ionise a H atom if the electron occupies n = 5 orbit? Compare your answer with the ionization enthalpy of H atom (energy required to remove the electron from n =1 orbit).

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