Which two elements most likely have similar properties? (1 point) Responses Ca and Sc Ca and Sc Cs and Rn Cs and Rn Li and Fr Li and Fr F and Ne

Ca and Sc

The two elements that most likely have similar properties are Li (lithium) and Fr (francium).

To determine which two elements most likely have similar properties, you can refer to the periodic table. Elements that are located in the same group or column on the periodic table tend to have similar properties. This is because elements within the same group have the same number of valence electrons, which are responsible for determining chemical behavior.

Looking at the options provided:

- Ca (Calcium) and Sc (Scandium) are both located in Group 2, also known as the alkaline earth metals. They likely have similar properties.

- Cs (Cesium) and Rn (Radon) are not in the same group, so they are less likely to have similar properties.

- Li (Lithium) and Fr (Francium) are not in the same group either, so they are less likely to have similar properties.

- F (Fluorine) and Ne (Neon) are both located in Group 17, also known as the halogens. They likely have similar properties.

Based on this analysis, the two elements that most likely have similar properties are Ca and Sc (Calcium and Scandium) and F and Ne (Fluorine and Neon).