10-minute Quiz : Chapter 7 Metallic bonding and ionic bonding

The atomic number of gallium (Ga) is 31. Which of the following combinations about a Ga³⁺ ion is correct?

• A
• B
• C
• D

Metallic bond is the electrostatic attraction between

• A. cations and anions.
• B. nuclei and shared electrons.
• C. cations and delocalized electrons.
• D. anions and delocalized electrons.

The electron diagrams of a lithium atom and a chlorine atom are shown below. Lithium and chlorine react to form a compound. Which of the following combinations about the compound is correct?

• A
• B
• C
• D

Which of the following statements concerning SiO₃²⁻ are correct?

(1) Its name is silicate ion.

(2) It is a polyatomic anion.

(3) It consists of non-metals only.

• A. (1) and (2) only
• B. (1) and (3) only
• C. (2) and (3) only
• D. (1), (2) and (3)

Which of the following combinations about the chemical formulae and names of ionic compounds is INCORRECT?

• A
• B
• C
• D

Which of the following statements concerning ionic compounds are correct?

(1) It can be produced from a metal atom and a non-metal atom.

(2) It consists of charged particles.

(3) It is electrically neutral.

• A. (1) and (2) only
• B. (1) and (3) only
• C. (2) and (3) only
• D. (1), (2) and (3)

The diagram below shows the electronic arrangement of an ion with a charge of -2. This is an ion of

• A. neon.
• B. oxygen.
• C. magnesium.
• D. fluorine.

The chemical formulae of manganese(II) chloride and copper(II) phosphate are MnCl₂ and Cu₃(PO₄)₂ respectively. What is the chemical formula of manganese(II) phosphate?

• A. MnPO₄
• B. Mn₂PO₄
• C. Mn₂(PO₄)₃
• D. Mn₃(PO₄)₂

WX₂, Y₂Z and YX are ionic compounds. The following table shows the colour of their aqueous solutions. Which of the following statements are correct?

(1) W²⁺(aq) is blue in colour.

(2) Y⁺(aq) is colourless.

(3) The colour of Z²⁻(aq) cannot be determined.

• A. (1) and (2) only
• B. (1) and (3) only
• C. (2) and (3) only
• D. (1), (2) and (3)

Consider the following set-up. Which of the following statements is correct?

• A. The gel containing sodium dichromate solution is purple in colour.
• B. A golden yellow colour gradually appears around B.

• C. An orange colour gradually appears around A.

• D. The carbon rods can be replaced by plastic rods.