There is a decrease in value of which property as the elements in Period 2 are considered in order from lithium to fluorine?

Regents Chemistry Exam August 2025 Question 33

33  There is a decrease in value of which property as the elements in Period 2 are considered in order from lithium to fluorine?

(1) atomic radius

(2) electronegativity

(3) first ionization energy

(4) atomic mass

Solution:

We can look at Table S on the Reference Table which lists all the elements with their atomic radius, electronegativity, and first ionization energies. There should be a decrease in atomic radis as we go from left to the right on the Periodic Table. Choice 1 is the correct answer.

LINKS:

Regents Chemistry Guides and Solutions

Chemistry Tutoring

More Regents Chemistry Practice