‘’Atoms combine to have _ electrons in their valence shells'' is called the octet rule.
Step 1:
The valence electrons in an atom present in the outermost shell are called the valence shell.
An atom is a very small particle of a chemical element that can exist on its own or not.
Step 2:
According to the octet rule, atoms lose or gain electrons in order to acquire an outer shell electronic configuration that is closest to that of a noble gas.
The octet rule is used to measure the presence of attraction force between the atoms.
This rule specifies where electrons should be placed on the orbitals.
The noble gases contain eight valence electrons in their outermost shells. Noble gases are stable because they follow octet rue.
Final answer:
Therefore ‘’Atoms combine to have eight electrons in their valence shells'' is called the octet rule.