Atomic structure and bonding - Jamb Chemistry Past Questions and Answers

Question 71:

• JAMB 1994

Which of the following is the correct order of decreasing activity of the metals Fe, Ca, Al and Na?

A. Fe> Ca> Al> Na
B. Na> Ca> Al> Fe
C. Al> Fe> Na> Ca
D. Ca> Na> Fe>, Al

Question 72:

• JAMB 1994

The diagram above represents an atom of

A. Magnesium
B. Helium
C. Chlorine
D. Neon

Question 73:

• JAMB 1995

A particle that contains 8 proton, 9 neutrons and 7 electrons could be written as?

A. O
B. O⁺
C. O⁺
D. O^-

Question 74:

• JAMB 1995

The ability of ionic solids is generally due to the?

A. Negative electron affinity of most atoms
B. Crystal lattice forces
C. Electron pair sharing
D. Positive ionization potentials

Question 75:

• JAMB 1995

Which of the following statements is FALSE about isotopes of the same element?

A. They have the same number of electrons in their outermost shells
B. They have different atomic masses
C. They have the same atomic number and the number of electrons
D. They have the same atomic number but different umber of elelctrons