Atomic structure and bonding - Jamb Chemistry Past Questions and Answers

Question 1:

• JAMB 2019

The periodic classification of elements is an arrangement of the elements in order of their

A. Atomic Weights
B. Isotopic Weights
C. Molecular Weights
D. Atomic Numbers
E. Atomic Masses

Question 2:

• JAMB 2019

Elements P, Q, R, S have 6, 11, 15, 17 electrons respectively, therefore,

A. P will form an electrovalent bond with R
B. Q will form a covalent bond with S
C. R will form an electrovalent bond with S
D. Q will form an electrovalent bond with S
E. Q will form a covalent bond with R

Question 3:

• JAMB 2019

When ammonia and hydrogen ion bond together to form ammonium ion, the bond formed is called

A. Ionic bond
B. Electrovalent bond
C. Covalent bond
D. Co-ordinate bond
E. Hydrogen bond

Question 4:

• JAMB 2019

The nucleus of an atom contains

A. Protons only
B. Neurons only
C. Protons and electrons
D. Neutrons and electrons
E. Protons and neutrons

Question 5:

• JAMB 2019

The normal boiling point of a liquid is defined as

A. The temperature at which its vapour pressure equals the atmospheric pressure
B. The temperature at which bubbles begin to form
C. The temperature at which the vapour pressure equals 1 temperature
D. The temperature at which the rate of condensation of vapour equals the rate of vaporisation of the liquid
E. The temperature at which the space above the liquid is saturated