Chemical Bond

Which of the following is incorrect about chemical bond?

• Bond formed when transfer or share of electrons occur

• Bond formed because atoms want to achieve stability

• Ionic bond and covalent bond are two types of chemical bond

• Bond formed involving all electrons in an atom

Which of the following is an ionic compound?

• NaCl

• NH3

• HCl

• CO2

Which of the following is the property of ionic compound?

• Does not dissolve in water

• Dissolve in organic solvent

• High melting and boiling points

• Conducts electricity in solid state

Diagram 1 shows the atom model of a compound.

Which of the following is the property of the compound?

• Dissolves in water

• Dissolve in organic solvent

• High melting and boiling points

• Able to conduct electricity in molten state

Diagram 2 shows a diamond molecule.

Which of the following is correct about the molecule?

• High melting and boiling points

• Able to conduct electricity

• Formed from the sharing of electrons of metal atoms

• Van der Waals force of attraction exists between its molecules

What is the meaning of metallic bond?

• Bond formed through sharing of electrons

• Bond formed between hydrogen atom and fluorine, oxygen or nitrogen atom

• Bond formed when metal atom transfers electron to non-metal atom

• Bond formed when there is electrostatic force of attraction between a sea of electrons and positively-charged metal ions

Diagram 3 shows part of the diagram for the formation of metallic bond.

What is X?

• Anion

• Electron

• Neutron

Which of the following is the similarity between ionic bond and covalent bond?

• Product is a neutral molecule

• Involves valence electrons only

• Electrostatic force of attraction is present in the compound

• Occurs between metal atom and non-metal atom

Which of the following best explains the reason why inert gases do not form compound?

• Inert gases are unreactive

• Inert gases exist as monoatom

• Inert gases have achieved duplet or octet electron arrangement

Diagram 4 shows the electron arrangement of ammonium chloride. Which of the following shows ionic bond?

• A

• B

• C

• D