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Q.

Given below are the atomic numbers of some group 14 elements. The atomic number of the element with lowest melting point is :

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a

50

b

14

c

6

d

82

answer is D.

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Detailed Solution

Order of M.P. of group 14 : C > Si > Ge > Pb > Sn

elementM.P. (°C)
Z = 6 = C3730
Z = 14 = Si1410
Z = 32 = Ge937
Z = 50 = Sn232
Z = 82 = Pb327
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