Jamb Chemistry 2000 Past Questions and Answers

Question 11:

• JAMB 2000

The electron configuration of \(_{22}X^{2+}\) ion is

A. 1s² 2s²2p⁶ 3s² 3p⁶ 4s² 3d²
B. 1s² 2s²2p⁶ 3s² 3p⁶ 4s² 3d¹
C. 1s² 2s²2p⁶ 3s² 3p⁶
D. 1s² 2s²2p⁶ 3s² 3p⁶ 4s²

Question 12:

• JAMB 2000

Which of the following types of bonding does not involve the formation of new substance?

A. Metallic
B. Covalent
C. Co-ordinate
D. Electrovalent

Question 13:

• JAMB 2000

The knowledge of half-life can be used to

A. Create an element
B. Detect an element
C. Split an element
D. Irradiate an element

Question 14:

• JAMB 2000

The shapes of CO₂, H₂O and CH ₄ respectively are

A. Bent, linear and tetrahedral
B. Bent, tetrahedral and linear
C. Linear, bent and tetrahedral
D. Tetrahedral, linear and bent

Question 15:

• JAMB 2000

The distance between the nuclei of chlorine atoms in a chlorine molecule is 0.194 mm. The atomic radius of chlorine atom is

A. 0.097 mm
B. 0.194 mm
C. 0.388 mm
D. 2.388 mm