Properties of Ionic Compounds and Formation of Magnesium Chloride

Flashcards covering the formation of magnesium chloride, the definition of ionic/electrovalent compounds, and melting/boiling points of representative ionic compounds from NCERT Science Chapter 3.

Ionic compounds (Electrovalent compounds)

Compounds formed by the transfer of electrons from a metal to a non-metal.

Magnesium cation ($\text{Mg}^{2+}$)

The positive ion formed when a magnesium atom ($2, 8, 2$) loses two electrons, resulting in the electron configuration $2, 8$.

Chloride anion ($\text{Cl}^-$)

The negative ion formed when a chlorine atom ($2, 8, 7$) gains one electron, resulting in the electron configuration $2, 8, 8$.

Cation and anion present in $\text{MgCl}_2$

The cation is the magnesium ion ($\text{Mg}^{2+}$) and the anion is the chloride ion ($\text{Cl}^-$).

Melting and boiling points of $\text{NaCl}$

A melting point of $1074\,\text{K}$ and a boiling point of $1686\,\text{K}$.

Melting and boiling points of $\text{LiCl}$

A melting point of $887\,\text{K}$ and a boiling point of $1600\,\text{K}$.

Melting and boiling points of $\text{CaCl}_2$

A melting point of $1045\,\text{K}$ and a boiling point of $1900\,\text{K}$.