Free help with homework

Why join Brainly?

  • ask questions about your assignment
  • get answers with explanations
  • find similar questions


Across the period, the nuclear force of attraction of an atom increases. As the nuclear pull increases, the electrons are more tightly and closely bound to the nucleus which is located at the center of an atom. Hence, the atomic size decreases across the period.
2 5 2
The Brain
  • The Brain
  • Helper
Not sure about the answer?
Learn more with Brainly!
Having trouble with your homework?
Get free help!
  • 80% of questions are answered in under 10 minutes
  • Answers come with explanations, so that you can learn
  • Answer quality is ensured by our experts