At which step(s) pictured on the graph below, does the temperature remain constant?

Option D. Condensation

Explanation:

Condensation is the proces in which gaseous molecules are converted into liquid. During condensation, the temperature remains constant as there is no change in kinetic energy of the gaseous molecules.

From the graph given above, we can see that the temperature at the Gas – Liquid remains the same. At this state, condensation occurs as the gas molecules are converted into liquid.

the density(ratio between mass and volume as m/v) decreases from top to bottom in periodic table group as the size increases and nuclear charge decreases. but in periods density increases from left to right as atom size decreases and nuclear charge increases.