Answer: A. Electronegativity increases as you move to the right of the periodic table.
B. Electronegativity is the ability of an atom to attract electrons.
D. Electronegativity increases with a decreased number of protons.
Explanation:-
Electronegativity is defined as the property of an element to attract a shared pair of electron towards itself.
The size of an atom decreases as we move across the period because the electrons get added to the same shell and the nuclear charge keeps on increasing. Thus the electrons get more tightly held by the nucleus.
As, the size of an element decreases, the valence electrons come near to the nucleus. So, the attraction between the nucleus and the shared pair of electrons increases.
Electronegativity increases when the protons increases as then the pull on electrons will be more.