Question

Which among the following elements has the lowest density and is lightest?

• A. Scandium
• B. Cobalt
• C. Copper
• D. Iron

Hint:

Scandium has the lowest density and is the lightest metal among the options provided.

Answer 1

The Correct Option is A

Step 1: Understanding Density and Weight.
Scandium is the lightest among the elements listed. It has the lowest density of the metals mentioned. Scandium's density is lower compared to cobalt, copper, and iron.

Step 2: Analyzing the options.
(A) Scandium: Correct. Scandium is the lightest and has the lowest density.
(B) Cobalt: Incorrect. Cobalt is denser than scandium.
(C) Copper: Incorrect. Copper has a higher density than scandium.
(D) Iron: Incorrect. Iron is heavier and has a higher density than scandium.

Step 3: Conclusion.
Scandium is the lightest and has the lowest density, corresponding to option (A).