These are your future doctors speaking.

Doctors do not know chem.

"greater the difference, the stronger the bond"

^referring to electronegativity

"C2H2, has a double bond between two carbons (1 pi bond) while C2H4 has 4 sigma bonds instead."

"as electronegativity decreases down a period, the atom is less likely to hold onto the proton, increasing acidity."

It is the definition of lewis base; meaning it donates one of its electrons:)) to form the bond to the carbon

^the same person who posted the above statement conflating lewis bases with radicals also posted "My suggestion to mastering organic chemistry is the same as my suggestion in learning a new language. NEVER GIVE UP!!"

@NicolauSakerNeto I suspected, that it be of little help, sorry. Hydrogen like functions are well known, and also one of the reasons we need post-HF methodology to come closer to the actual bonding picture in molecules - so I guessed you already know most of it. Maybe this is your chance to write up a question and put in a reference request. Maybe somebody who does not visit chat does know more...