Question

the melting point and boiling points of the halogens ____________ as one moves from f2 to i2. decreases cannot be predicted is the same increases question 10 1 pts place the following substances in order of increasing boiling point. ne cl2 o2 cl2 < ne < o2 cl2 < o2 < ne ne < cl2 < o2 ne < o2 < cl2 o2 < cl2 < ne

Explanation:

1. For the halogens ($F_2$ to $I_2$), as the molar - mass increases down the group, the strength of London - dispersion forces increases. Since melting and boiling points are related to the strength of intermolecular forces, they increase from $F_2$ to $I_2$.
2. For $Ne$, $Cl_2$, and $O_2$, they are all non - polar substances. The strength of London - dispersion forces is related to the molar mass. The molar mass of $Ne$ is approximately 20 g/mol, $O_2$ is approximately 32 g/mol, and $Cl_2$ is approximately 71 g/mol. The higher the molar mass, the stronger the London - dispersion forces and the higher the boiling point.

Answer:

First question: D. increases
Second question: D. Ne < O₂ < Cl₂