Answer:
electronegativity
Step-by-step explanation:
The periodic trend associated with the ability of an atom to attract electrons is electronegativity. Electronegativity is a measure of how strongly an atom attracts the electrons in a chemical bond when it is part of a compound. It is an important property for understanding chemical bonding and the behavior of elements in chemical reactions.
Electronegativity generally increases across a period (from left to right) and decreases down a group (from top to bottom) in the periodic table. Elements with higher electronegativities tend to attract electrons more strongly and can form polar covalent or ionic bonds with elements of lower electronegativity.
In summary, electronegativity is the specific periodic trend associated with an atom's ability to attract electrons in chemical bonds.