Question

compared with the electronegativities of the elements on the left side of a period, the electronegativities of the elements on the right side of the same period tend to be ____. lower higher the same unpredictable

Explanation:

Electronegativity is a measure of an atom's ability to attract electrons in a chemical bond. In a period (row) of the periodic table, as we move from left to right, the number of protons in the nucleus increases while the number of electron shells remains the same. This leads to a greater effective nuclear charge, which pulls electrons more strongly. As a result, the electronegativity of elements increases from left to right in a period.

Answer:

B. higher