Explore BrainMass

Explore BrainMass

    Periodic Trends and VSEPR Theory

    Not what you're looking for? Search our solutions OR ask your own Custom question.

    This content was COPIED from BrainMass.com - View the original, and get the already-completed solution here!

    Explain why the general trend exists for elements getting smaller as you move across a period on the periodic table.

    Explain the importance of the VSEPR Theory.

    © BrainMass Inc. brainmass.com March 5, 2021, 12:45 am ad1c9bdddf

    Solution Preview

    As you move across the periodic table, the number of electrons that each atom has increases. At the same time the number of protons and neutrons also increases. This is also true as you go down a group in the periodic table. But the key difference is that while electrons are added in different valence shells as you go down a group, the electrons are added to the same valence shell as you go across a period. This means that across a ...

    Solution Summary

    The reason for trends in radii is explained. Main features of VSEPR theory are also given.