Questions and Answers
Select the correct electron configuration for Na+
What is the electron configuration for Na+?
1s22s22p6
Using the periodic table, fill in the missing component of the electron configuration for magnesium. Mg = 1s22s22p63s___
2
What is the missing piece of the electron configuration for Mg?
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Which pair of elements will have a similar valence shell electron configuration?
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What is the valence shell electron configuration of nitrogen?
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Select the correct electron configuration for F−
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Are there unpaired electrons in phosphorus? If so, how many?
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How many electrons can be found in an individual orbital?
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Select the correct electron configuration for Cr.
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How many d electrons are found in cobalt?
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Which electrons are lost in the formation of the Sn4+ cation?
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Which set of orbitals can hold a maximum of 14 electrons?
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How many valence electrons are present in sulfur?
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Identify what is wrong in the electron configuration for Ca = 1s11s22s22p63s23p64s2.
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Which energy level is the closest to the nucleus?
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Metals tend to _______ electrons to form _______.
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Select the correct electron configuration for Na+
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Study Notes
Electron Configurations
- Na+ has an electron configuration of 1s²2s²2p⁶, achieved by losing one electron from the neutral sodium atom (1s²2s²2p⁶3s¹).
- Magnesium (Mg) has an electron configuration of 1s²2s²2p⁶3s², indicating the presence of two electrons in the 3s subshell.
- Chromium (Cr) has a unique electron configuration of 1s²2s²2p⁶3s²3p⁶4s¹3d⁵, due to the stability conferred by half-filling the d subshell.
Valence Electrons
- Nitrogen (N) has a valence shell electron configuration of 2s²2p³, while phosphorus (P) has 3s²3p³, resulting in both having five valence electrons.
- Similarities in valence configurations are exhibited between elements in the same column of the periodic table.
Unpaired Electrons
- Phosphorus contains 3 unpaired electrons in its valence shell, signifying its potential for bonding and magnetic properties.
Orbital Capacity
- Individual orbitals can hold a maximum of 2 electrons, irrespective of the orbital type (s, p, d, f).
- f orbitals can accommodate up to 14 electrons due to the presence of seven f orbitals.
Cation Formation
- Cations are formed by metals losing electrons. For example, Sn4+ is created by removing four electrons from its 5p and 5s subshells.
Energy Levels
- The energy level closest to the nucleus is n=1, with subsequent levels at n=2, n=3, etc.
Element Abundancy
- Oxygen is recognized as the most abundant element on Earth, emphasizing its significance in various chemical processes.
Errors in Electron Configurations
- Misconfigurations can occur, such as writing Ca = 1s¹ instead of 1s², highlighting the importance of accuracy in electron representations.
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Description
Test your knowledge on the electron configuration of sodium ions with this quiz. Understand how to derive the configuration for Na+ by removing electrons from the neutral atom's configuration. Perfect for chemistry students looking to strengthen their grasp on ionic states.
