Whether an ionic bond or a covalent bond forms, bonds form in order to make newly created substances than the substances they were created from.
a. less stable
b. more stable
c. less efficient
d. more efficient

I am sure the correct answer is B. Bonds are formed in order to make substances more stable than their former. Every process in this world works in order to achieve equilibrium or to be in a stable state this includes chemical reactions. Unstable substances will always find a way to become stable because it is the state with minimum energy.

Determine the  wavelength of light emitted when an electron  in an li2+ ion  makes a transition from an orbital with n  =  6 to an orbital with n  = 5.

Answerspecies;