Q.1(a) An atom contains 2 electrons in shell having principal quantum number=1, 8 electrons in shell having principal quantum number=2 and 8 electrons in shell having principal quantum number=3. Determine its (a) symbol and electronic configuration (b) total number of s and p orbitals (c) calculate and draw total number of angular nodes in each orbitals.

Principles of Modern Chemistry
8th Edition
ISBN:9781305079113
Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Chapter5: Quantum Mechanics And Atomic Structure
Section: Chapter Questions
Problem 44AP: The energy needed to ionize an atom of element X when it is in its most stable state is 500kJmol1 ....
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Q.1(a) An atom contains 2 electrons in shell having principal quantum number=1, 8 electrons in shell having principal quantum number=2 and 8 electrons in shell having principal quantum number=3. Determine its (a) symbol and electronic configuration (b) total number of s and p orbitals (c) calculate and draw total number of angular nodes in each orbitals. (b) If we replace the hydrogen atoms in ammonia with the ethyl moieties (C2H5)3— N), there is no change in the hybridization of central oxygen atom, yet they have different bond angles, Why? Which molecule has lower bond angle? Give reasons to support your answer. (c) What is the simplest justifications for believing that molecular structure is more often governed by BP-BP/BP-LP/LP-LP repulsions than by the van der Walls repulsions of the nonbonding electrons on the substituent atoms?
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