Which of the following is closest to the density of lead at room temperature?

• A. 7.9 g/cm^3
• B. 2.7 g/cm^3
• C. 19.3 g/cm^3
• D. 11.3 g/cm^3

Answer: (D)

Verified step by step guidance

1. Understand that density is defined as mass per unit volume, expressed as \(\text{density} = \frac{\text{mass}}{\text{volume}}\) with units like g/cm\(^3\).
2. Recall or look up the known density of lead at room temperature from a reliable source or periodic table reference; lead is a heavy metal with a relatively high density.
3. Compare the given options to the known density value of lead, which is approximately 11.3 g/cm\(^3\).
4. Identify which option is numerically closest to this known density value.
5. Conclude that the correct answer is the value closest to 11.3 g/cm\(^3\), confirming the density of lead at room temperature.