13 public questions tagged with this topic.
Tungsten (W) has the highest melting point among transition metals (3422°C).
Ref: NCERT Class 12 Chemistry > Chapter 4: d and f Block Elements > Topic: Lanthanoids - Electronic Configuration and Lanthanoid Contraction
Zinc (Zn) has a low melting point (420°C) due to completely filled d-orbitals (3d 10 ), reducing metallic bonding strength.
Ref: NCERT Class 12 Chemistry > Chapter 4: d and f Block Elements > Topic: Lanthanoids - Electronic Configuration and Lanthanoid Contraction
Tungsten (W) has the highest melting point (~3422°C) among all transition metals.
Ref: NCERT Class 12 Chemistry > Chapter 4: d and f Block Elements > Topic: General Properties of d-Block - Electronic Configuration and Trends
Strong metallic bonding due to involvement of d-electrons in bonding.
Ref: NCERT Class 12 Chemistry > Chapter 4: d and f Block Elements > Topic: Applications of d and f Block Elements
Chromium (Cr) has the highest melting point in the 3d series due to half-filled 3d 5 4s 1 configuration providing extra stability.
Ref: NCERT Class 12 Chemistry > Chapter 4: d and f Block Elements > Topic: Applications of d and f Block Elements
Strong metallic bonding due to involvement of d-electrons in bonding.
Ref: NCERT Class 12 Chemistry > Chapter 4: d and f Block Elements > Topic: Actinoids and Comparison of Lanthanoids and Actinoids
Sublimation separates the solid that sublimes at 60°C from the one that melts at 120°C, exploiting the phase change difference.
Ref: NCERT Class 11 Chemistry > Chapter 8: Organic Chemistry - Some Basic Principles and Techniques > Topic: Purification Methods - Crystallization Distillation Chromatography
Melting point in group 14 decreases from C (covalent network) to Sn and Pb (metallic), with Sn having the lowest among C, Si, Ge, and Sn due to weaker metallic bonding.
Ref: NCERT Class 11 Chemistry > Chapter 3: Classification of Elements and Periodicity in Properties > Topic: Periodic Trends - Atomic Radii Ionic Radii and Ionization Enthalpy
Among alkali metals (group 1), melting point decreases down the group due to weaker metallic bonding with increasing size. Li, being smallest, has the highest melting point.
Ref: NCERT Class 11 Chemistry > Chapter 3: Classification of Elements and Periodicity in Properties > Topic: Electronic Configuration and Types of Elements - s p d f Blocks
In period 5 d-block (Y to Cd), melting point peaks with strong metallic bonding. Mo (group 6, 4d⁵ 5s¹) has the highest melting point due to maximum unpaired electrons.
Ref: NCERT Class 11 Chemistry > Chapter 3: Classification of Elements and Periodicity in Properties > Topic: Electron Gain Enthalpy and Electronegativity and Valency
In period 5 d-block (Y to Cd), melting point peaks with strong metallic bonding due to maximum unpaired electrons. Mo (group 6, 4d⁵ 5s¹) has the highest melting point.
Ref: NCERT Class 11 Chemistry > Chapter 3: Classification of Elements and Periodicity in Properties > Topic: Electron Gain Enthalpy and Electronegativity and Valency
Melting point decreases down group 1 due to weaker metallic bonding. Cs (group 1, period 6) has the lowest melting point among Li, Na, and Cs.
Ref: NCERT Class 11 Chemistry > Chapter 3: Classification of Elements and Periodicity in Properties > Topic: Anomalous Properties and Second Period and Chemical Reactivity
