(Q).
Q: All elements are most stable when their outermost shell is filled with electrons according to which rule? Choices: - quartet rule - string rule - coupling rule - octet rule A:
(A).
octet rule

(Q).
Q: Gymnosperms have evolved to include what? Choices: - stems - cells - flowers - seeds A:
(A).
seeds

(Q).
Q: Intensity is defined to be the power per unit area carried by a what? Choices: - filament - shift - wire - wave A:
(A).
wave