Rucete ✏ Chemistry In a Nutshell
1 Melting point and boiling point, along with heat of vaporization, heat of fusion, density, are affected by the structure and bonding force of the elements.
2 The melting points and boiling points of the period 3 elements described below are common periodic tendencies.
3 From Na to Al
1. The elements are metals.
2. The melting points and boiling points increase
--> the atoms become smaller
--> increases effective nuclear charge (effective nuclear charge)
--> the strengths of the metal-metal bonds increase.
4 Silicon(Si)
High melting and boiling points
1. Macromolecular
2. Strong covalent bonds
3. A significant amount of energy is required to break this bond.
5 Phosphorus(P), Sulfur(S), Chlorine(Cl)
1. Molecular substances
2. Calculate melting points by the strengths of van der Waals' force and the size of the molecules.
Melting point and boiling point | In a nutshell
1 Melting point and boiling point, along with heat of vaporization, heat of fusion, density, are affected by the structure and bonding force of the elements.
2 The melting points and boiling points of the period 3 elements described below are common periodic tendencies.
3 From Na to Al
1. The elements are metals.
2. The melting points and boiling points increase
--> the atoms become smaller
--> increases effective nuclear charge (effective nuclear charge)
--> the strengths of the metal-metal bonds increase.
4 Silicon(Si)
High melting and boiling points
1. Macromolecular
2. Strong covalent bonds
3. A significant amount of energy is required to break this bond.
5 Phosphorus(P), Sulfur(S), Chlorine(Cl)
1. Molecular substances
2. Calculate melting points by the strengths of van der Waals' force and the size of the molecules.
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Chemistry in a nutshell