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Q.

Supply the proper elements of 14th group for A, B and C to relate the properties shown

(I) forms most acidic oxide —A

(II) commonly found in +2 oxidation state —B

(III) used as semiconductor—C

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a

A-Si, Carbon ;       B-Pb;          C-Ge only

b

A-Carbon ;           B-Pb, Ge;     C-Silicon only

c

A-Carbon ;            B-Pb;              C-Si, Ge

d

A-Si;                    B-Ge;            C -Pb

answer is D.

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Detailed Solution

I) forms most acidic oxide —carbon (CO2)

(II) commonly found in +2 oxidation state —Pb+2

(III) Ge is used as semiconductor

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