Question

(a) Give the electron configuration of magnesium and chlorine.
(b) Write the electron dot-structures of magnesium and chlorine atoms.
(c) Describe the formation of magnesium chloride from magnesium and chlorine by the transfer of electrons.
(d) What type of chemical bonds are present in the magnesium chloride formed?
​(e) Why do such compounds have high melting points?

Answer 1

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Answer 2

Explanation:

• (a) $[N e] 3 s^{2}$ is the electron configuration of magnesium. $[\mathrm{Ne}] 3 s^{2} 3 p^{5}$ is the electron configuration of Chlorine.

• (b) Electron dot structure displays the connection between the atoms. This structure also displays the electrons that are unpaired.
• It is understood that chlorine has ‘7’ valence electrons and magnesium have ‘2’ valence electrons. So, the total no. of electrons is 16.
• (c) Electron dot-structures of magnesium and chlorine is shown  in the below figure.
• (d) The chemical bonds formed in the magnesium chloride is ionic bond.
• (e) High melting point is seen in ionic compounds because oppositely charged ions have strong electrostatic force of attraction.
• So, to break the strong bonding force, a large amount of energy is needed.