Atomic structure and bonding - Jamb Chemistry Past Questions and Answers

Question 111:

• JAMB 2004

²²⁶₈₈Ra → ^x₈₆Rn + α - particle
What is the value of x in the nuclear reaction above?

A. 220
B. 222
C. 226
D. 227

Question 112:

• JAMB 2004

The property of chlorine which causes hydrogen chloride to be more ionic than the chlorine molecules is its

A. Electrovalency
B. Electron affinity
C. Electropositivity
D. Electronegativity

Question 113:

• JAMB 2004

Chlorine consisting of two isotopes of mass number 35 and 37 in the ratio 3:1 has an atomic mass of 35.5. Calculate the relative abundance of the isotopes of mass number 37

A. 20
B. 25
C. 60
D. 75

Question 114:

• JAMB 2004

Transition metals possess variable oxidation states because they have

A. Electrons in the d orbitals
B. Electron in the s orbitals
C. A variable number of electrons in the p orbitals
D. Partially filled p orbitals

Question 115:

• JAMB 2005

Which of these properties gives a solid its definite shape?

A. Strong intermolecular attraction
B. High melting point
C. High boiling point
D. Weak intermolecular attraction