Write the electron-dot structure for sodium and chlorine atoms.
How do these form a chemical bond? Name the type of bond so formed.
Why does a compound has high melting point? [3 MARKS]

Open in App

Solution

Each point: 1 Mark

1. Electron dot structure :

2. Chemical bond known as ionic bond is formed by the transfer of an electron from sodium atom to chlorine atom.

3. Sodium chloride exists as a crystalline solid in which a large number of $N a^{+}$ and $C l^{-}$ ions are closely packed in space. Since attractive forces among the ions are quite large, the compound has a very high melting point.

Suggest Corrections

Similar questions

Q. (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?

An element A has 4 valence electrons in its atom whereas element B has only one valence electrons its atom. The compound formed by A and B does not conduct electricity. What is the nature of chemical bond in the compound formed ? Give its electron dot structure.

Q. (a) Draw electron dot structure of Sodium (Na), Oxygen (O) and Magnesium (Mg).
(b) Why do ionic compounds have high melting points?

Q. (a) Write down the electronic configuration of (i) sodium atom, and (ii) chlorine atom.
(b) How many electrons are there in the outermost shell of (i) a sodium atom, and (ii) a chlorine atom?
(c) Show the formation of NaCl from sodium and chlorine atoms by the transfer of electron(s).
(d) Why has sodium chloride a high melting point?
(e) Name the anode and the cathode used in the electrolytic refining of impure copper metal.

(a) What is the atomic number of carbon? Write its electronic configuration.
(b) What type of chemical bonds are formed by carbon? Why?
(c) Name the three allotropic forms of carbon.

Join BYJU'S Learning Program

Write the electron-dot structure for sodium and chlorine atoms. How do these form a chemical bond? Name the type of bond so formed. Why does a compound has high melting point? [3 MARKS]

Write the electron-dot structure for sodium and chlorine atoms.
How do these form a chemical bond? Name the type of bond so formed.
Why does a compound has high melting point? [3 MARKS]