Choose the incorrect order.

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(A) Let us analyze each option:$A$. $IE_2$ order: $Li^+ (1s^2)$,$O^+ (1s^2 2s^2 2p^3)$,$F^+ (1s^2 2s^2 2p^4)$. $Li^+$ has a noble gas configuration,so

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$Li > O > F$ ($IE_2$ order)

Vedclass · Answer

(A) Let us analyze each option:$A$. $IE_2$ order: $Li^+ (1s^2)$,$O^+ (1s^2 2s^2 2p^3)$,$F^+ (1s^2 2s^2 2p^4)$. $Li^+$ has a noble gas configuration,so it has the highest $IE_2$. $F^+$ has higher $Z_{eff}$ than $O^+$,so $IE_2$ order is $Li > F > O$. Thus,option $A$ is incorrect.$B$. $EA$ order: $Mg$ ($3s^2$,stable),$S$ $(3p^4)$,$Cl$ $(3p^5)$. $EA$ increases across a period. $Mg$ has near-zero $EA$. The order $Mg $C$. Size order: $I > Br > F > O > N$. The given order $I > Br > N > O > F$ is incorrect because $N, O, F$ are in the same period and size decreases from $N$ to $F$. Thus,option $C$ is also incorrect.$D$. $Z_{eff}$ order: $Na (Z=11, Z_{eff}=2.2)$,$K (Z=19, Z_{eff}=2.2)$,$Ca (Z=20, Z_{eff}=2.85)$. The order $Na Note: Both $A$ and $C$ are incorrect orders.

List-$I$	List-$II$
$(A)$ Rubidium	$(1)$ Germanium
$(B)$ Platinum	$(2)$ Radioactive chalcogen
$(C)$ Eka-silicon	$(3)$ $s$-block element
$(D)$ Polonium	$(4)$ Atomic number $78$

List-$A$	List-$B$
$(1)$ $He$	$(A)$ High electron gain enthalpy
$(2)$ $Cl$	$(B)$ Electropositive element
$(3)$ $Ca$	$(C)$ Strong reducing agent
$(4)$ $Li$	$(D)$ High ionization enthalpy

Similar Questions

Which of the following statements is/are correct?

In which of the following options does the order of arrangement not agree with the variation of property indicated against it?

Match the items in List-$I$ with the items in List-$II$:
List-$I$ List-$II$
$(A)$ Rubidium $(1)$ Germanium
$(B)$ Platinum $(2)$ Radioactive chalcogen
$(C)$ Eka-silicon $(3)$ $s$-block element
$(D)$ Polonium $(4)$ Atomic number $78$

Match the items in List-$A$ with the items in List-$B$.

List-$A$ List-$B$

$(1)$ $He$ $(A)$ High electron gain enthalpy

$(2)$ $Cl$ $(B)$ Electropositive element

$(3)$ $Ca$ $(C)$ Strong reducing agent

$(4)$ $Li$ $(D)$ High ionization enthalpy

Which of the following orders is not correct about the property shown against it?

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