Atomic structure and bonding - Jamb Chemistry Past Questions and Answers

Question 61:

• JAMB 1992

¹⁴₇N + X → ¹⁷₈O + ¹₁ H. In the above reaction, X is a?

A. Neutron
B. Helium atom
C. Litgium atom
D. Deuterium atom

Question 62:

• JAMB 1993

An element, E, has the electronic configuration 1s²2s²2p⁶3s²p³. The reaction of E with a halogen X can give?

A. EX₃ and EX₅
B. EX₃ only
C. EX₅ only
D. EX₂ and EX₃

Question 63:

• JAMB 1993

Two atoms represented as U and U are?

A. Isomers
B. Allotropes
C. Isotopes
D. Anomers

Question 64:

• JAMB 1993

As the difference in electronegativity between bonded atoms increases, polarity of the bond?

A. Decreases
B. Increases
C. Remains unchanged
D. Reduces to zero

Question 65:

• JAMB 1993

Which group of elements forms hydrides that are pyramidal in structure?

A. III
B. IV
C. V
D. VI