Observe the following statements.Statement (A | vedclass

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(B) Ionisation energy is the energy required to remove an electron from an isolated gaseous atom.Ionisation potential decreases as we move down in a g

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Both $A$ and $B$ are correct.

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(B) Ionisation energy is the energy required to remove an electron from an isolated gaseous atom.Ionisation potential decreases as we move down in a group.As the atomic number increases down a group,the number of shells increases.Thus,the outermost electrons are further away from the nucleus and can be removed more easily.Hence,statement $(A)$ is correct.The outer electron in potassium $(K)$ is in the $4s$-orbital,which is further away from the nucleus than the $3s$-orbital of sodium $(Na)$.This means that less energy is needed to remove the outermost electron of potassium compared to sodium.Therefore,the first ionisation potential of sodium is greater than that of potassium.Hence,statement $(B)$ is also correct.

$(IP)_1$	$7.1 \ eV$
$(IP)_2$	$10.3 \ eV$
$(IP)_3$	$36.2 \ eV$
$(IP)_4$	$39.1 \ eV$

Observe the following statements.
Statement $(A)$: In general,the ionisation potential value decreases on moving down in the group.
Statement $(B)$: The $1$st ionisation potential of sodium is greater than that of potassium.
Correct answer is:

Similar Questions

The first ionization enthalpy of the following elements are in the order:

The ionization potential $(IP)$ values for an element are given below. Identify the element:
$(IP)_1$ $7.1 \ eV$
$(IP)_2$ $10.3 \ eV$
$(IP)_3$ $36.2 \ eV$
$(IP)_4$ $39.1 \ eV$

Which of the following orders of ionization energy is correct?

The element having the highest first ionization enthalpy is

In which of the following electronic configurations of an element is there a very large difference between the second and third ionization energy?

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Observe the following statements.Statement $(A)$: In general,the ionisation potential value decreases on moving down in the group.Statement $(B)$: The $1$st ionisation potential of sodium is greater than that of potassium.Correct answer is: