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(C) The electronic configuration of nitrogen $(N)$ is $1s^2 2s^2 2p^3$ and that of oxygen $(O)$ is $1s^2 2s^2 2p^4$.Statement-$1$: Nitrogen has a half

Vedclass · Accepted Answer

Both statements $1$ and $2$ are correct

Vedclass · Answer

(C) The electronic configuration of nitrogen $(N)$ is $1s^2 2s^2 2p^3$ and that of oxygen $(O)$ is $1s^2 2s^2 2p^4$.Statement-$1$: Nitrogen has a half-filled $2p$ subshell,which makes it very stable. Adding an electron to nitrogen requires energy (endothermic),whereas adding an electron to oxygen is exothermic. Thus,nitrogen has a less negative (lesser) electron gain enthalpy than oxygen. Statement-$1$ is correct.Statement-$2$: Nitrogen has a stable half-filled $2p^3$ configuration,making it harder to remove an electron compared to oxygen,which has a $2p^4$ configuration. Therefore,the ionization enthalpy of nitrogen is higher than that of oxygen,meaning oxygen has a lesser ionization enthalpy than nitrogen. Statement-$2$ is correct.

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

Choose the correct option regarding the following statements:
Statement-$1$: Nitrogen has lesser electron gain enthalpy than oxygen.
Statement-$2$: Oxygen has lesser ionization enthalpy than nitrogen.

Similar Questions

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

Identify the incorrect statement.

Among the elements $B$,$Al$,$C$,and $Si$,
$(a)$ which element has the highest first ionisation enthalpy?
$(b)$ which element has the most metallic character? Justify your answer in each case.

The statement that is not correct for the periodic classification of elements is

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Choose the correct option regarding the following statements:Statement-$1$: Nitrogen has lesser electron gain enthalpy than oxygen.Statement-$2$: Oxygen has lesser ionization enthalpy than nitrogen.