Single Choice

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

A$$\displaystyle K^{+}\rightarrow K^{+2}+e^{-}$$
B$$\displaystyle Li^{+}\rightarrow Li^{+2}+e^{-}$$
Correct Answer
C$$\displaystyle Fe\rightarrow Fe^{+}+e^{-}$$
D$$\displaystyle Ca^{+}\rightarrow Ca^{+2}+e^{-}$$

Solution

The second ionization potential of Li involves greatest amount of energy as it involves breaking of stable $$\displaystyle 1s^2$$ electronic configuration.
$$\displaystyle Li^+ \rightarrow Li^{2+} + e^- $$
$$\displaystyle 1s^2 \rightarrow 1s^1 $$
The second ionization of potassium, the first ionization of Fe and the second ionization of Ca requires removal of an electron from $$\displaystyle [Ar] $$, $$\displaystyle 3d^64s^1 $$ and $$\displaystyle 4s^1 $$ electronic configurations respectively.

SIMILAR QUESTIONS

Periodic Classification of Elements

Which sequence of ionization potential is correct?

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.

Periodic Classification of Elements

Which of the following has maximum ionisation potential?

Contact Details