Which material from the table is a liquid at 50°C and a gas at 300°C? a iodine b rubidium c phosphorus d potassium
um b
I don't see a table but I looked up the melting and boiling points of each element listed on the web. You can do the same. I think Rb is the answer but you should confirm that by looking up the values yourself just in case I didn't read the tables right OR perhaps I made a typo. I'm good at that.
The material that is a liquid at 50°C and a gas at 300°C is iodine (option A).
To determine which material from the periodic table is a liquid at 50°C and a gas at 300°C, we need to examine the melting and boiling points of the elements listed.
a) Iodine (I): Iodine has a melting point of 113.7°C, which is higher than the given 50°C temperature. It is a solid at 50°C. Moreover, the boiling point of iodine is 184.3°C, which is lower than 300°C. Therefore, iodine is not the correct answer.
b) Rubidium (Rb): Rubidium has a melting point of 39.3°C, making it a liquid at 50°C. However, the boiling point of rubidium is only 688°C, which is well below 300°C. So, rubidium is not the correct answer.
c) Phosphorus (P): Phosphorus has a melting point of 44.1°C, which is lower than 50°C, so it would be a liquid at 50°C. However, the boiling point of phosphorus is 280°C, still below the given 300°C temperature. Hence, phosphorus is not the correct answer.
d) Potassium (K): Potassium has a melting point of 63.5°C, which means it would be a solid at 50°C. However, the boiling point of potassium is 759°C, well above 300°C. Therefore, potassium is not the correct answer.
After analyzing the provided options, none of the listed elements fit the criteria of being a liquid at 50°C and a gas at 300°C. It is possible that the correct answer may not be one of the options listed.