Question

While going from right to left across a period in the modern periodic table, the electronegativity of elements:

• A. increases
• B. decreases
• C. remains unchanged
• D. decreases first then increases

Answer 1

The correct option is B decreases

Electronegativity is the tendency of an atom to gain electron(s) in order to attain noble gas configuration. It is inversely proportional to atomic size. It decreases as we go down the group and increases across a period from left to right. Hence from right to left in a period in the modern periodic table, electronegativity decreases.