Why sodium is more electropositive than chlorine?​

Electronegativity is high because the halogen has a large, unshielded nuclear charge. Sodium is a metal and metals tend to be low in electronegativity

Explanation: Halogen has a large, unshielded nuclear charge which is why the electronegativity is high. Sodium is metal so it tends to be low in electronegativity.

Explanation:

This electropositivity is high because the halogen has a large, unshielded nuclear charge. Sodium is a metal and metals tend to be low in electronegativity (they like to give away their electrons). Chlorine, similar to oxygen, likes to take and keep electrons.

answer: c. the experiment shows that the red substance experienced a chemical change.

explanation: chemical change is the change in which chemical composition of the substance changes. physical change is the change in which there is no change in chemical composition.

chemical changes are accompanied by following changes:

a) precipitate formation

b) energy is released or absorbed

c) formation of bubbles

d) change in color

as it is given that the red color has disappeared and there is production of gas, it means the red substance has undergone a chemical change.

e