State the force which holds two or more atoms together as a stable molecule.
Chemical bond is the force which holds two or more atoms together in a stable molecule.
Draw the electron dot diagram for the compounds given. Represent the electrons by [.] and [x] in the diagram. [Ca=20, O=8, Cl=17, H=1] (i) Calcium oxide (ii) Chlorine molecule (iii) Water molecule
(i) Electron dot diagram of Calcium oxide is shown below: (ii) The electron dot diagram of the Chlorine molecule is shown below: (iii) An electron dot diagram of the Water…
Fill in the blanks from the choices given : The polar covalent compound in gaseous state that does not conduct electricity is …………… [carbon tetrachloride, ammonia, methane].
The polar covalent compound in gaseous state that does not conduct electricity is ammonia.
A compound with low boiling point is : (a) Sodium chloride (b) Calcium chloride (c) Potassium chloride (d) Carbon tetrachloride
Carbon tetrachloride Reason Carbon Tetrachloride is a covalent compound and Covalent Compounds have low boiling point.
Draw the electron dot structure of : (i) Nitrogen molecule [N=7] (ii) Sodium chloride [Na=11, Cl=17] (iii) Ammonium ion [N=7, H=1]
(i) Electron dot structure of Nitrogen molecule is shown below: (ii) Electron dot structure of Sodium chloride is shown below: (iii) Electron dot structure of Ammonium ion is shown below:
State the meaning of ‘lone pair of electrons’. Draw the electron dot diagram of Hydronium ion. [H = 1, O = 8]
The pair of electrons not shared by any other atom are called lone pair of electrons. Electron dot diagram of Hydronium ion is shown below:
Fill in the blank with the correct choice given in the bracket — Ionic or electrovalent compounds do not conduct electricity in their …………… state. [fused/solid]
Ionic or electrovalent compounds do not conduct electricity in their solid state.
Give a reason for — Ionic compounds have a high melting point.
Ionic compounds have ionic bonds so there exists a strong force of attraction between the oppositely charged ions, so a large amount of energy is required to break the strong…