Match column I (14^th group element) with column II(physical property)
column I column II
A C I lowest first ionization enthalpy
B Sn II lowest boiling point
C Si III lowest atomic radius
D Pb IV lowest density
V lowest electronegativity

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A	B	C	D
III	I	IV	II

A	B	C	D
V	I	IV	II

A	B	C	D
IV	II	V	I

A	B	C	D
II	I	IV	V

answer is A.

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Detailed Solution

Atomic radius : C < Si < Ge < Sn < Pb

first ionization enthalpy : Sn < Pb < Ge < Si < C

Density : Si < C < Ge < Sn < Pb

Electronegativity : Si = Ge = Sn < Pb < C

Boiling point : Pb < Sn < Ge < Si

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	column I		column II
A	C	I	lowest first ionization enthalpy
B	Sn	II	lowest boiling point
C	Si	III	lowest atomic radius
D	Pb	IV	lowest density
		V	lowest electronegativity