
Actually Welcome to the concept of Atomic Structure.
Since, We all know that, To draw any Electron-Dot Structure, we always have to know the exact Number of valence or free electrons of any atom or molecule, hence
The Correct Answer is :-
D. Number of valence electrons.
Answer:
Explanation:
Propyl and butyl groups are the alkyl groups formed by replacing the one hydrogen atom from their corresponding alkanes.
Propyl is formed from propane and has n-propyl and isopropyl alkyl isomers.
Butyl is from butane and has n-butyl, isobutyl , sec-butyl and tertiary butyl alkyl isomers.
Condensation goes with A.
Evaporation goes with C.
Sublimation goes with B.
Freezing goes with D.