Chemistry Electron Configuration Quiz

Select the correct electron configuration for Na+

What is the electron configuration for Na+?

Using the periodic table, fill in the missing component of the electron configuration for magnesium. Mg = 1s22s22p63s___

What is the missing piece of the electron configuration for Mg?

Which pair of elements will have a similar valence shell electron configuration?

What is the valence shell electron configuration of nitrogen?

Select the correct electron configuration for F−

Are there unpaired electrons in phosphorus? If so, how many?

How many electrons can be found in an individual orbital?

Select the correct electron configuration for Cr.

How many d electrons are found in cobalt?

Which electrons are lost in the formation of the Sn4+ cation?

Which set of orbitals can hold a maximum of 14 electrons?

How many valence electrons are present in sulfur?

Identify what is wrong in the electron configuration for Ca = 1s11s22s22p63s23p64s2.

Which energy level is the closest to the nucleus?

Metals tend to _______ electrons to form _______.

Select the correct electron configuration for Na+

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.

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.