Atomic structure and bonding - Jamb Chemistry Past Questions and Answers

Question 201:

• JAMB 2019

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

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

Question 202:

• JAMB 2019

Which of the following represents the kind of bonding present in ammonium chloride?

A. Ionic only
B. Covalent only
C. Ionic and dative covalent
D. Dative covalent

Question 203:

• JAMB 2019

Which of the following properties increases from left to right along the period but decreases down the group in the Periodic Table?
i. Atomic Number ii. Ionization energy iii. Metallic character iv. Electron affinity

A. Ii and iii only
B. Ii and iv only
C. Iii and iv only
D. I and ii only

Question 204:

• JAMB 2019

The molecular shape and bond angle of water are respectively

A. Linear, 180°
B. Bent, 109.5°
C. Tetrahedral, 109.5°
D. Bent, 105°

Question 205:

• JAMB 2019

A radioactive nucleus has a half-life of 20 years, starting with 100,000 particles, how many particles will be left exactly at the end of 40 years

A. 75,000 particles
B. 35,000 particles
C. 25,000 particles
D. 50,000 particles