Q.

Z, R, A, Y and D are the elements belonging to 14th group of Modern periodic table. The correct trend of boiling point for these elements is  Z > R > A > Y > D . The element ‘Z' in the sequence is

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a

Ge

b

Sn

c

C

d

Si

answer is C.

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Detailed Solution

Atomic radius trend…CSi>Ge>Pb>Sn;EN trend…C>Pb>Si=Ge=Sn;Density…..C(graphite)Si>Ge>Sn>Pb;Resistivity…C>Si=Ge>Pb>Sn;Conductivity…C
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Z, R, A, Y and D are the elements belonging to 14th group of Modern periodic table. The correct trend of boiling point for these elements is  Z > R > A > Y > D . The element ‘Z' in the sequence is