Question

Which of the following chemical bonds is formed by the complete transfer of one or more electrons from one atom to another?

• A. Covalent Bond
• B. Ionic Bond
• C. Coordinate Bond
• D. Hydrogen Bond

Hint:

Bond Formation Summary: Transfer of Electrons → Ionic Bond Sharing of Electrons → Covalent Bond One-sided Sharing → Coordinate Bond Weak Attraction involving Hydrogen → Hydrogen Bond

Answer 1

The Correct Option is B

Step 1: Understand bonding.
We need the bond formed by complete transfer of electrons from one atom to another.

Step 2: Identify it.
That is an ionic bond, also called an electrovalent bond. It usually forms between a metal and a non-metal.

Step 3: How it works.
The metal loses electrons to become a positive ion and the non-metal gains them to become a negative ion. For example $Na \rightarrow Na^+ + e^-$ and $Cl + e^- \rightarrow Cl^-$, giving $NaCl$.

Step 4: Rule out others.
A covalent bond shares electrons. A coordinate bond shares a pair from one atom. A hydrogen bond is a weak attraction, not electron transfer.

Step 5: Conclude.
Complete electron transfer gives an ionic bond.

Answer: Ionic Bond