Question

Which of the following best explains why electronegativity increases as you
go from left to right along a period in the periodic table?
A. The number of valence electrons decreases, and atomic radius
decreases.
B. The number of valence electrons increases, and atomic radius
decreases.
C. The number of valence electrons decreases, and atomic radius
increases
D. The number of valence electrons increases, and atomic radius
increases​

Answer 1

Answer:

B

Explanation:

the number of valence electrons increase, atomic radius decreases

Answer 2

Answer:

B. The number of valence electrons increases, and atomic radius

decreases.

Explanation:

Across a period, effective nuclear charge increases as electron shielding remains constant. A higher effective nuclear charge causes greater attractions to the electrons, pulling the electron cloud closer to the nucleus which results in a smaller atomic radius.