In the Bohr model, where may electrons circle the nucleus?
Only in allowed paths.
How does the quantum mechanical model represent electrons around the nucleus?
As three-dimensional areas.
How many electrons can one orbital hold at most?
Two electrons.
Which subshell has the lowest energy and contains one spherical orbital?
The 1s subshell.
Which electrons determine an atom’s chemical properties?
Valence electrons.
What property patterns organize elements into periodic-table rows and columns?
Patterns in metallic or nonmetallic character, physical state, and reactivity.
What atomic pattern helps predict relative element properties from the periodic table?
Patterns in electrons in atoms’ outermost energy levels.
What does an atom’s mass number count?
Its protons and neutrons.
How many neutrons does a strontium atom with atomic number 38 and mass number 88 have?
50 neutrons.
What does electron-dot notation show about an atom?
Only valence electrons in its outermost energy shell.
Answer 11 questions on Atomic Structure and Periodic Patterns.
1. An atomic diagram uses the Bohr model to show an electron around the nucleus. Which arrangement is consistent with this model?
2. A scientist replaces a Bohr-style diagram with the quantum mechanical model. How does the new model represent where electrons are located?
Go over the full study guide for Atomic Structure and Periodic Patterns.
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