Question

If an element of high electronegativity combines with an electropositive metal then the product will be

• A. an interstitial alloy
• B. an ionic compound
• C. a substitutional alloy
• D. a simple mixture

Hint:

High \(\chi\) element + electropositive metal → ionic bonding via electron transfer.

Answer 1

The Correct Option is B

Step 1: Recall electronegativity concept.
- A highly electronegative element (e.g., Cl, O) tends to gain electrons.
- An electropositive metal (e.g., Na, K, Ca) tends to lose electrons.
Step 2: Bond formed.
The electron transfer leads to the formation of cations (from metal) and anions (from non-metal), producing an ionic compound.
Step 3: Eliminate other options.
- Interstitial alloy: small atoms occupy voids in metal lattice (not the case here).
- Substitutional alloy: one metal substitutes another in a lattice (metal-metal combination).
- Simple mixture: no chemical bonding.
Final Answer: \[ \boxed{\text{an ionic compound}} \]