Question Detail

CHM 101 CHM 101 Past Questions Objective Question
Take CBT

Question

Why does atomic size decrease across the period?
Options
A increase in nuclear force of attraction
Correct Answer
B shielding effect
C decrease in nuclear force of attraction
D photoelectric effect
Correct Answer

Option A is the correct answer.

Detailed Explanation

Across a period, nuclear charge increases while shielding remains similar, increasing the effective nuclear pull on electrons and decreasing atomic radius.

Hint

More protons pull electrons in tighter.

Question Info

Course: CHM 101
Topic: CHM 101 Past Questions
Type: Objective
Difficulty: Not specified
Question 1707 of 1872
Previous Course Details Next