The octet rule is that elements are more stable Clower potential energy) when they
have 8 electrons in their outermost
energy level. These electrons are going to
be:
2 electrons in an s orbital and 6 electrons in p
orbitals
8 electrons in the forbitals
8 electrons in the d orbitals
2 p orbital electrons and 6 sorbital electrons

8 எலெக்ற்றோன்ஸ் இன் தே பொர்பிடல்ஸ்

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