Which of the following occurs for the representative elements going left to right across the period?
A)Electronegativity decreases.
B)Atomic size increases.
C)Forces of attraction between electron and nucleus increase because the effective nuclear charge increases.
D)The outer electrons are held more weakly.
E)none of these

Question

Quizplus · Accepted Answer

As we move left to right across a period, the number of protons in the nucleus increases, which increases the positive charge of the nucleus. This attracts the electrons in the same energy level more strongly, leading to an increase in the effective nuclear charge or the force of attraction between the nucleus and electrons. This results in a decrease in atomic size and an increase in ionization energy and electronegativity.

Which of the Following Occurs for the Representative Elements Going