Match the group-I and group-II and select the correct answer?
Group - I Group – II
A Correct order for 1^st ionization enthalpy 1 $L i > B e < B < C > N$
B Correct order for negative value of electron gain enthalpy 2 $B e < B < C < N < O$
C Correct order for electronegativity 3 $B e < B < C < N > O$
A B C
1 3 3 1
2 1 3 2
3 3 2 1
4 3 1 2

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answer is D.

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Detailed Solution

I ) First ionization enthalpy order Be < B < C < N > O

II ) electron gain enthalpy order Li > Be < B < C > N

III ) Electronegativity order Be < B < C < N < O

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	Group - I		Group – II
A	Correct order for 1^st ionization enthalpy	1	$L i > B e < B < C > N$
B	Correct order for negative value of electron gain enthalpy	2	$B e < B < C < N < O$
C	Correct order for electronegativity	3	$B e < B < C < N > O$