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D and F Block Elements question

2022 · 24 Jun · Shift 2 · Q6
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D and F Block Elements question

2022 · 24 Jun · Shift 2 · Q6

JEE MainChemistryD and F Block ElementsMCQ+4 / −1
Metals generally melt at very high temperature. Amongst the following, the metal with the highest melting point will be :
  1. A
    Hg
  2. B
    Ag
  3. C
    Ga
  4. D
    Cs
View written solutionFree

Correct answer: B

  1. Identify the metals and their approximate melting points

    We compare the given metals:

    • Hg (Mercury): melting point −39∘C -39^\circ\text{C}−39∘C
    • Ag (Silver): melting point 962∘C 962^\circ\text{C}962∘C
    • Ga (Gallium): melting point about 30∘C30^\circ\text{C}30∘C
    • Cs (Caesium): melting point about 28.5∘C28.5^\circ\text{C}28.5∘C

  2. Compare the values

    Clearly, 962∘C>30∘C>28.5∘C>−39∘C962^\circ\text{C} > 30^\circ\text{C} > 28.5^\circ\text{C} > -39^\circ\text{C}962∘C>30∘C>28.5∘C>−39∘C

    So among the given metals, silver (Ag) has the highest melting point.

  3. Check each option

    • A: Hg  very low melting point, incorrect
    • B: Ag  highest melting point among these, correct
    • C: Ga  melts near room temperature, incorrect
    • D: Cs  melts near room temperature, incorrect

  4. Final answer

    The metal with the highest melting point is: Ag\boxed{\text{Ag}}Ag​

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