Multiple Choice

Select the correct order of first ionization potentials:

A$$ N_2 >O_2 $$
Correct Answer
B$$ N_2 > O $$
Correct Answer
C$$ O > O_2 $$
Correct Answer
D$$ O_2 =N_2 $$

Solution

The first ionization potential of nitrogen molecule is higher than the first ionization potential of oxygen molecule as nitrogen molecule contains a triple bond which is stronger than the double bond between O atoms. Hence, the option A is correct and the option D is incorrect.
The first ionization potential of nitrogen molecule is higher than that of oxygen atom as in nitrogen molecule; the electron is attracted by two nuclei. Hence, the option B is correct.
The first ionization potential of oxygen atom is greater than that of oxygen molecule as in oxygen molecule; the electron is removed from antibonding pi orbital which requires less energy. Thus, the option C is correct.

SIMILAR QUESTIONS

Periodic Classification of Elements

Which sequence of ionization potential is correct?

Periodic Classification of Elements

Which ionisation potential (IP) in the following equations involves the greatest ammount of energy?

Periodic Classification of Elements

Ionisation energy in the alkali metals group :

Periodic Classification of Elements

As nuclear charge increases and atomic radii increases, ionisation potential :

Periodic Classification of Elements

B has a smaller first ionization enthalpy than Be. Consider the following statements: (I) it is easier to remove $$2p$$ electron than $$2s$$ electron (II) $$2p$$ electron of B is more shielded from the nucleus by the inner core of electrons than the $$2s$$ electrons of Be (III) $$2s$$ electron has some penetration power than $$2p$$ electron (IV) atomic radius of B is more than Be (atomic number $$B=5, Be=4$$) The correct statements are:

Periodic Classification of Elements

In comparison to boron, berylium has:

Periodic Classification of Elements

The electronic configuration with the highest ionization enthalpy is:

Periodic Classification of Elements

Which of the following atoms has the highest first ionization energy?

Periodic Classification of Elements

The decreasing order of the ionization potential of the following elements is:

Periodic Classification of Elements

Arrange the elements $$Se, Cl$$ and $$S$$ in the increasing order of ionisation energy.

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