Which of the following lists all of the physical properties phosphorous atom only? I. It is a yellow solid at room temperature. II. It is soluble in carbon disulfide. III. It reacts with hydrogen when heated. IV. Its density is 2.97g/cubic centimeter V. It melts at 112^circ C

The correct answer is:<br /><br />I. It is a yellow solid at room temperature.<br />II. It is soluble in carbon disulfide.<br />IV. Its density is $2.97g/cubic$ centimeter.<br />V. It melts at $112^{\circ }C$.<br /><br />Explanation:<br />- I. It is a yellow solid at room temperature: This is a physical property as it describes the appearance of phosphorus at room temperature.<br />- II. It is soluble in carbon disulfide: Solubility is a physical property as it describes how phosphorus interacts with another substance (carbon disulfide) without changing its chemical composition.<br />- III. It reacts with hydrogen when heated: This is a chemical property as it describes how phosphorus changes its chemical composition when it reacts with hydrogen.<br />- IV. Its density is $2.97g/cubic$ centimeter: Density is a physical property as it describes the mass per unit volume of phosphorus.<br />- V. It melts at $112^{\circ }C$: Melting point is a physical property as it describes the temperature at which phosphorus changes from a solid to a liquid.