Jamb Chemistry Past Questions and Answers

Question 1601:

• JAMB 2011

From the diagram above, an ideal can be represented by

A. M
B. N
C. K
D. L

Question 1602:

• JAMB 2011

Which of the following questions is correct about the periodic table?

A. The non-metallic properties of the elements tend to decrease across each period
B. The valence electrons of the elements increase progressively across the period
C. Elements in the same group have the same numbeer of electron shells
D. Elements in the same period have the number of valence electrons

Question 1603:

• JAMB 2011

The relative atomic mass of a naturally occurring lithium consisting of 90% \(^7 _3\)Li and \(^6 _3\)10% Li is

A. 6.9
B. 7.1
C. 6.2
D. 6.8

Question 1604:

• JAMB 2011

An isotope has an atomic number of 15 and a mass number of 31. The number of protons it contain is

A. 16
B. 15
C. 46
D. 31

Question 1605:

• JAMB 2011

The molecular lattice of iodine is held together by

A. Dative bond
B. Metallic bond
C. Hydrogen bond
D. Van der Waal's forces