Question

The valence shell of an element 'A' contains 3 electrons while the valence shell of element 'B' contains 6 electrons. If A combine with B, the probable chemical formula of the compound is:

• A. AB
• B. A₂B
• C. A₃B₂
• D. A₂B₃

Answer 1

Answer:

D. A₂B₃

To determine the chemical formula of the compound formed by elements A and B, we need to consider the number of electrons in their valence shells.

Valence Shell Electrons:

• Element A has 3 electrons in its valence shell.

• Element B has 6 electrons in its valence shell.

Chemical Bonding:

For element A to achieve a stable noble gas configuration, it needs to lose 3 electrons. For element B to achieve a stable noble gas configuration, it needs to gain 2 electrons.

Probable Chemical Formula:

Based on the number of electrons needed to achieve a stable configuration, the probable chemical formula of the compound is:

A₂B₃