C. ICl is ionic. The molar mass of Br2 is larger than Cl2 so it has a higher boiling point and more polarizability. Chlorine, as chlorine has fewer electrons shells than bromine. Why is the boiling point of Cl2 lower than the boiling point of Br2? At room temperature, Cl2 is a gas, Br2 is a liquid, and KBr is a solid What's the total number of electrons that can fill an ''f'' sublevel . (ionic bonding), charge differential is same in both (1+ and 1-), Na is a smaller atom than K so the distance between bonding atoms is less which increases the lattice energy, an interaction of a solute and a solvent; when an ion is surrounded by solvent molecules, combining a substance chemically with water, the attraction between the molecules and the surface, the adhesive forces between the water molecules and the glass are greater than the cohesive forces, the cohesive forces between the molecules are greater than the adhesive forces between the molecules and the glass. In biology class today my teacher played a porn video to show what they were talking about Should I talk to the principal to get her fired. Bromine (Br2) is liquid at room temperature, because it boiling point at normal pressure is 58.8 °C (higher) and its freezing point is -7.2 °C (which is lower than room temperature). As a result, chlorine is smaller and has a smaller atomic radius. The molar mass is not identical: the molar mass of Br2 is only 159.80 g/mol compared to 162.35 g/mol for ICl. Since Cl2 is smaller than Br2, Cl2 will have a lower boiling point. the ability of an electron cloud to be distorted by the movement of electrons. In order to be a H-bond, what must be present? Br is larger than Cl, therefore Br2 has stronger intermolecular foces (Van der Waals) compared to Cl2, At room temp (25 C): Cl2 is a gas, Br2 is a liquid, and I2 is a solid. the greater the electronegativity (increases across, decreases down), the stronger the dipole. The difference in size, relates to boiling point of the molecule. This is because the size effects the strength of the forces between the molecules (intermolecular forces). As a result, chlorine is smaller and has a smaller atomic radius. Chemistry Q&A Library Explain why the boiling point of Br2 (59°C) is lower than that of iodine monochloride, ICl (97°C), even though they have nearly the same molar mass.Choose one: A. Br2 is larger than ICl. The difference in size, relates to boiling point of the molecule. The molar mass of Br2 is larger than Cl2 so it has a higher boiling point and more polarizability, The melting point of KCl(s) is 776˚C, whereas the melting point of NaCl(s) is 801˚C. Why is the boiling point of Br2 lower than that of iodine mono chloride, ICl, even though they have nearly the same molar mass? D. ICl is polar while Br2 is nonpolar. Join Yahoo Answers and get 100 points today. So in conclusion chlorine has a lower boiling point. What do you think of the answers? How many peaks would you expect from a Hydrogen NMR of Ethane. Briefly describe the concept of electronegativity and explain why CCl4 is a non-polar molecule. When using cm3 as the unit for volume to calculate the concentration why must you divide the cm3 by 1000? At room temperature, Cl2 is a gas, Br2 is a liquid, and KBr is a solid. One to one online tution can be a great way to brush up on your Chemistry knowledge. LDF, dipole-dipole, h-bonding, covalent network, Which has the highest boiling point? Have a Free Meeting with one of our hand picked tutors from the UK’s top universities. What determines the strength of a dipole-dipole interaction? E. It is impossible to say … MgO has a larger charge difference (2+ and 2-) than NaF which means it has more lattice energy, The atomic radius of Li is larger than Be.