(B) Ionization enthalpy: Across a period,it increases. For $B, Be, C, O, N$,the order is $B < Be < C < O < N$. Thus,$A \rightarrow III$.$(B)$ Metallic

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(B) Ionization enthalpy: Across a period,it increases. For $B, Be, C, O, N$,the order is $B $(B)$ Metallic character: It decreases across a period and increases down a group. For $Na, Mg, Si, P$,the order of metallic character is $P $(C)$ Electron gain enthalpy: Generally becomes more negative across a period. For halogens,the order of electron gain enthalpy (magnitude) is $I $(D)$ Electronegativity: Increases across a period. For $I, N, O, F$,the order is $I Therefore,the correct match is $A-III, B-I, C-IV, D-II$.

Class 11 Chemistry Classification of Elements and Periodicity in Properties Mix Examples - Classification of Elements and Periodicity in Properties

Medium

Match the following and select the correct option:
List-$I$ List-$II$
$(A)$ Ionization enthalpy $(i)$ $P < Si < Mg < Na$
$(B)$ Metallic character $(ii)$ $I < N < O < F$
$(C)$ Electron gain enthalpy $(iii)$ $B < Be < C < O < N$
$(D)$ Electronegativity $(iv)$ $I < Br < F < Cl$

List-$I$	List-$II$
$(A)$ Ionization enthalpy	$(i)$ $P < Si < Mg < Na$
$(B)$ Metallic character	$(ii)$ $I < N < O < F$
$(C)$ Electron gain enthalpy	$(iii)$ $B < Be < C < O < N$
$(D)$ Electronegativity	$(iv)$ $I < Br < F < Cl$

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