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JEE Main 202523 JanuaryEvening Shift
Exam
JEE Main
Year
2025
Date
23 January
Shift
Evening Shift
Subject
Chemistry
Chapter
p Block Elements (Group 13 & 14)

JEE Main 2025 · 23 January · Evening Shift · Chemistry · p Block Elements (Group 13 & 14)

Given below are the atomic numbers of some group 14 elements. The...

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

Options

  1. A6
  2. B82
  3. C14
  4. D50

Correct answer

D. 50

Step-by-step solution

Order of M.P. of group 14: C>Si>Ge>Pb>Sn\mathrm{C}>\mathrm{Si}>\mathrm{Ge}>\mathrm{Pb}>\mathrm{Sn} element  M.P. (∘C)Z=6=C3730Z=14=Si1410Z=32=Ge937Z=50=Sn232Z=82=Pb327\begin{array}{ll} \text{ element } & \text{ M.P. }\left({ }^{\circ} \mathrm{C}\right) \\ \mathrm{Z}=6=\mathrm{C} & 3730 \\ \mathrm{Z}=14=\mathrm{Si} & 1410 \\ \mathrm{Z}=32=\mathrm{Ge} & 937 \\ \mathrm{Z}=50=\mathrm{Sn} & 232 \\ \mathrm{Z}=82=\mathrm{Pb} & 327 \end{array}$$
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