Question

What is the trend in melting point, density, and reactivity as Group I is descended?

Answer 1

The melting and boiling point decreases, density increases, and reactivity increases as Group I is descended.

Step-by-step explanation:

The trend in melting point, density, and reactivity as Group I is descended is as follows:

1. Melting and boiling point: Decreases as you move down the group.
2. Density: Increases as you move down the group.
3. Reactivity: Increases as you move down the group.

This trend can be explained by the increase in atomic radius and the decrease in ionization energy as you go down the group. The larger atomic radius allows for weaker metallic bonding, resulting in lower melting and boiling points. The decrease in ionization energy makes it easier for the outermost electron to be lost, increasing reactivity.