Atomic structure and bonding - Jamb Chemistry Past Questions and Answers

Question 121:

• 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 122:

• JAMB 2006

A particle that contains 11 protons, 12 neutrons and 10 electrons is probably a

A. Neutral non-metal
B. Metallic ion
C. Non-metallic ion
D. Neutral metal

Question 123:

• JAMB 2006

Nuclear fission involves the splitting of a heavy element into two nuclei of

A. Nearly equal masses with a relaese of energy and radiaton
B. Equal masses with a relaese of energy
C. Equal masses with a release of energy and radiation
D. Unequal masses without any relaese of energy

Question 124:

• JAMB 2006

The element with the electron configuration 1s²2s²2p³ is

A. Calcium
B. Chlorine
C. Oxygen
D. Nitrogen

Question 125:

• JAMB 2006

A decrease in atomic size and an increase in nuclear charge across a period lead to

A. An increase in the tendency to lose electron
B. An increase in chemical reactivity
C. A decrease in electropositivity
D. A decrease in covalency in bond formation