Answer:
electrons release energy as they return to the ground state
Explanation:
when electrons fall to the ground state they emit radiations of unique frequencies
which is seen as lines separated by dark spaces
Gravitational pull coming from the sun
Answer:
Isocyanates
Explanation:
The functional group is cyanate ion of the formula NCO⁻. The atoms in this functional group occur in a straight line giving it a linear structure. It has a singe C-O bond and a triple N ≡ C bond. It forms cyanate salts when it reacts with pure elements like sodium and other reactive metals as it has some acidic properties. It also forms complexes like silver cyanato [Ag(NCO)₂]⁻
The answer is D, alters the test variable, and observes the effects on other outcome variables.
It would be A. Structural formula