The periodic table and periodicity of elements - Jamb Chemistry Past Questions and Answers

Question 31:

• JAMB 2003

Metals of the first transition series have special properties which are different from those of groups I and II elements because they have partially filled

A. S orbitals
B. P orbitals
C. D orbitals
D. F orbitals

Question 32:

• 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 33:

• JAMB 2006

The group IA metals are not found free in nature because they

A. Are very reactive and unstable
B. Are malleable and ductile
C. Have high melting and boiling point
D. Conduct heat and electricity

Question 34:

• JAMB 2007

the elements that belong to the third period of the periodic table are

A. Li, Be, Al and P
B. Na, P, O and Cl
C. B, C, N and O
D. Nz, Mg, S and Ar

Question 35:

• JAMB 2008

In the periodic table, the electrical and thermal conductivities are properties of elements that

A. Decrease across the period and increase down the group
B. Increase across the period and decrease down the group
C. Decrease across the period and down the group`
D. Increase acrosss the period and down the group